Contents
29 June 2026
Article 01
GS Paper 2 — International Relations / International Law
Why in News
The U.S. Navy carried out Hellfire missile strikes against three merchant tankers — Marivex, Settebello and Jalveer — all carrying Indian seafarers, as part of enforcement actions connected to its naval posture against Iran in the Gulf of Oman. While the Marivex and Jalveer escaped without casualties, three Indians aboard the Settebello were killed.
Although U.S. President Donald Trump and Iranian President Masoud Pezeshkian signed a Memorandum of Understanding (MoU) on 17 June 2026 at the Palace of Versailles, intended to extend the ceasefire and reopen the Strait of Hormuz, this remains an interim 60-day framework rather than a final peace settlement, and fresh confrontations between U.S. and Iranian forces have already tested its durability. Beyond the shifting geopolitical tides, the fundamental legal questions surrounding attacks on neutral shipping and accountability for civilian lives lost in combat zones remain unresolved.
The 17 June MoU is a 14-point interim framework opening a 60-day negotiating window on issues such as Iran’s nuclear stockpile and sanctions relief — it is not a final peace treaty, and subsequent strikes have already occurred despite it.
What Laws Govern Naval Operations During Armed Conflict?
Two primary bodies of law govern naval operations during an international armed conflict:
The law of the sea is set out primarily in the United Nations Convention on the Law of the Sea (UNCLOS), often called the “Constitution of the Oceans”. It defines maritime zones such as the territorial sea, exclusive economic zones (EEZs), the high seas, and international straits. Although the U.S., Israel, Iran and some other states are not parties to UNCLOS, its relevant provisions are widely regarded as customary international law binding on all states. India ratified UNCLOS in 1995 and is a full party to the Convention.
| Maritime Zone (under UNCLOS) | Extent | Coastal State Rights |
|---|---|---|
| Territorial Sea | Up to 12 nautical miles from baseline | Full sovereignty, subject to right of innocent passage |
| Contiguous Zone | 12–24 nautical miles | Limited control — customs, fiscal, immigration, sanitary |
| Exclusive Economic Zone (EEZ) | Up to 200 nautical miles | Sovereign rights over resources; not full sovereignty |
| High Seas | Beyond 200 nautical miles / EEZ limits | Open to all states; freedom of navigation |
Are Neutral Merchant Vessels and Civilians Protected?
The law of naval warfare does not confer unrestricted authority upon belligerents. Its operation is constrained by IHL, neutrality law, and the law of the sea. While ethical restraints on warfare have roots in ancient Greek, Roman, Indian and Chinese civilisations, their modern legal expression lies in IHL, codified in the 1949 Geneva Conventions and supplemented by other treaties and customary international law. IHL protects the wounded, sick, prisoners of war, civilians and civilian objects, while restricting certain weapons and methods of combat.
Unlike the UN Charter, which governs the legality of starting a war (jus ad bellum), IHL regulates the conduct of war (jus in bello) through the principles of distinction, proportionality, military necessity and precaution.
Plain-language note: Jus ad bellum asks “was it lawful to go to war at all?” Jus in bello asks “was the war fought lawfully, regardless of who started it?” A state’s actions can satisfy one and still violate the other.
In naval warfare, as on land, civilians and civilian objects are generally protected from attack. Submarine cables, pipelines, container ships and tankers carrying food are ordinarily shielded from deliberate targeting.
Commercial vessel MT Jalveer after it was attacked off the coast of Oman near Shinas Port. (ANI)
A naval blockade, to be lawful under the law of naval warfare, must restrict both the import of supplies and the export of goods to or from enemy-controlled ports, airports or coastal areas. It must be publicly declared, applied impartially to vessels of all states — including neutrals — and be effective rather than a mere “paper blockade”.
However, compliance with the law of naval warfare governing blockades is not, by itself, sufficient to justify attacks on neutral vessels. Such actions must also comply with the UN Charter, adopted in 1945 to maintain international peace and security. Article 2(4) of the Charter prohibits states from using force against another State’s territorial integrity or political independence, except pursuant to UN Security Council authorisation or in self-defence under Article 51, including — under the contested but widely invoked doctrine of ‘anticipatory’ self-defence — against an imminent threat.
Since the U.S. action against Iran arguably has neither Security Council authorisation nor a clearly established self-defence claim, many international law scholars view it as inconsistent with the UN Charter. Consequently, a blockade enforced this way may form part of an unlawful use of force and be unlawful as a matter of jus ad bellum, regardless of its compliance with the law of naval warfare (jus in bello). The exercise of belligerent rights to enforce a blockade, unlike self-defence or Security Council authorisation, is not recognised as an exception to Article 2(4)’s prohibition on the use of force.
Notably, the UN Security Council may authorise forcible measures by member states, and Article 42 expressly identifies “blockade” as one such measure. But outside a Security-Council-authorised blockade, there is no clear jus ad bellum basis for using force against neutral merchant vessels to enforce one. Even where a state has a valid basis for using force in self-defence, it may employ only force that is necessary and proportionate; that right does not ordinarily extend to attacks on third states or their vessels absent an independent basis for self-defence.
What Is Next for India?
Beyond doubts surrounding the legality of the strikes, key questions remain: what intelligence supported the attacks; were less intrusive measures such as boarding, diversion or capture available; and were adequate warnings issued to allow civilians to protect themselves? For India, the incident is not merely a diplomatic issue but a legally cognisable injury to its nationals.
Under the doctrine of “diplomatic protection”, India has standing to espouse claims arising from injuries to its citizens caused by an internationally wrongful act — to demand explanations, seek accountability and compensation, and call for an independent investigation into the deaths of the three seafarers.
The episode illustrates a recurring tension in contemporary conflict: compliance with the technical rules of naval warfare does not, by itself, legitimise the underlying use of force. For India — the world’s largest supplier of seafarers — the case strengthens the argument for an independent, internationally-backed inquiry and reinforces the importance of diplomatic protection as a tool to safeguard nationals caught in conflicts not of their making.
Prelims Pointers
Mains Practice Question
“Compliance with the law of naval warfare does not automatically render an attack on neutral shipping lawful under international law.” Examine this statement with reference to the principles of jus ad bellum and jus in bello, and discuss the remedies available to a state whose nationals are injured in such attacks.
GS Paper 2 · 15 marks · 250 words
MCQ Practice
With reference to the legal framework governing naval warfare, consider the following:
Assertion (A): A naval blockade that is publicly declared, effective, and applied impartially to all vessels including neutrals is lawful under international law.
Reason (R): Compliance with the law of naval warfare (jus in bello) is sufficient, by itself, to render the use of force establishing such a blockade lawful under the UN Charter.
Which one of the following is correct in respect of the above two statements?
Answer: B
Assertion A is a correct statement of the conditions for a lawful blockade under the law of naval warfare (jus in bello). However, Reason R is false: as the article explains, compliance with jus in bello rules on blockades does not by itself satisfy jus ad bellum requirements under the UN Charter (Article 2(4)). A blockade enforced through use of force without UN Security Council authorisation (Article 42) or a valid self-defence claim (Article 51) remains unlawful as a matter of jus ad bellum, irrespective of its compliance with naval warfare rules.
Article 02
GS Paper 1 / GS Paper 3 — Geography / Disaster Management
Why in News
A massive landslide caused by heavy rainfall blocked the flow of the Siji River in Arunachal Pradesh’s Lower Siang district, endangering lives and infrastructure downstream. District officials said rainfall-induced water accumulation had increased the possibility of the dam giving way and causing a flash flood.
The district authorities alerted residents of Likabali town and villages along the Siji river, which becomes the Gai river as it flows into Assam. People have been advised to stay away from riverbanks, avoid unnecessary movement near the river, and evacuate low-lying and flood-prone areas if instructed by the authorities.
Background context: This event is an example of a landslide dam (also called a landslide lake outburst flood risk when the blockage later breaches), a recurring Himalayan hazard. A comparable recent case is the October 2023 South Lhonak Lake glacial lake outburst flood in Sikkim, which is frequently referenced in disaster management discussions for the same reason — sudden upstream blockage followed by a high-velocity downstream flood risk.
Prelims Pointers
Article 03
GS Paper 4 — Applied Ethics / Behavioural Concepts (Opinion Piece)
Context
The article coins the term “Treatflation” — a portmanteau of ‘treat’ and ‘inflation’ — to describe the rising cumulative cost of recurring workplace celebrations: birthday cakes, promotion parties, weddings, and team lunches. Each individual contribution is small and voluntary, but their accumulation over a career can represent a significant, often unexamined, financial outflow.
The Psychological Driver
The author attributes this behaviour to “Normative Social Influence” — the tendency to change one’s behaviour to fit in with a group and maintain good relationships with others. Most employees contribute not because they are forced to, but because they wish to avoid being the only person who declines.
This is linked to the classic Solomon Asch conformity experiments of the 1950s, which demonstrated that people often align their behaviour with a group even when their own judgement suggests otherwise — the desire to avoid standing out frequently outweighs independent judgement.
The Financial Arithmetic
The article illustrates the compounding effect: a ₹500 contribution occurring twice a month adds up to ₹12,000 a year, and over a 30-year career this can exceed ₹3.6 lakh in nominal outflow. Viewed as an opportunity cost, the same ₹1,000 invested every month at a 10% annual return could grow to nearly ₹20 lakh over 30 years — illustrating the gap between small recurring social spending and its long-term compounding alternative.
The author frames this not as a call to stop participating in workplace celebrations, but as an argument for making such trade-offs consciously rather than unknowingly, recognising that relationships and the sense of belonging also carry value that cannot be reduced purely to monetary terms.
Prelims Pointers
Article 04
GS Paper 3 — Science & Technology / Disaster Management
Why in News
During disasters — such as the 2024 Wayanad (Mundakkai-Chooralmala) landslides in Kerala which killed several hundred people, the 2025 Dharali (Uttarakhand) flash flood, the 2025 Northeast India monsoon floods, and the May 2026 Uttar Pradesh storm that ultimately claimed over 100 lives — telecom towers topple, power lines are cut, and roads close. In such conditions, real-time information on what is happening on the ground becomes crucial for rescue and medical workers; its absence delays rescue operations and costs lives.
Researchers, in a paper published in the IEEE Transactions on Services Computing, have presented an approach using cooperative caching to transmit important real-time information even when the local network is in a subpar condition.
The lead author and institutional affiliation are attributed in the source coverage to researchers from Ireland (Trinity College Dublin); this could not be independently cross-verified against an indexed primary publication record at the time of writing. Readers should treat author attribution as provisional pending confirmation from the journal of record.
Cooperative Caching
At the time of a disaster, local administrations typically rely on three communication channels:
In cooperative caching, different parts of a disaster-response network — satellites, drones, base stations, and emergency vehicles — work together to store and share useful data. When one node receives or generates important content (such as satellite images or video), nearby nodes may also cache copies based on demand. This allows rescue teams to retrieve information from the nearest available source rather than a distant origin, reducing delay and improving reliability when infrastructure is damaged.
During disasters, real-time information about where people need help and which routes are still open is crucial for rescue and medical workers. (REUTERS)
Automatic Decision-Making: CMAB and FMAB
Creating such a caching system is technologically complex: drones are airborne, rescue vehicles are mobile, satellite positions constantly change, and each device has limited storage. To address this, researchers developed a statistical model called the Contextual Multi-Armed Bandit (CMAB), an AI model that optimises caching decisions quickly by reviewing three factors: what data is recently available, what data demand is currently high, and how much memory the cache requires.
Plain-language note: A “multi-armed bandit” is a reinforcement-learning approach to decision-making under uncertainty, where the system repeatedly chooses among several options (like slot machine arms) and learns over time which choices yield the best results — here, which data to cache and where.
A more advanced version, Federated Multi-Armed Bandit (FMAB), allows each node to learn not only from its own data but also from what nearby nodes have learnt, making the network more resilient as a whole.
Researchers noted that caching decisions are executed periodically rather than per request, amortising computational cost. Even the highest observed decision latency of the Contextual MAB model — around 87 microseconds — remains negligible compared to typical network delays.
Space Air Ground Integrated Network (SAGIN)
The work highlights the importance of a three-tier network architecture called SAGIN, where space (satellites), air (drones), and ground (base stations, vehicles) layers work together, with caching reducing the limitations that exist between them. In a post-disaster scenario, the priority is not to access all available information, but to identify which information is most useful — for instance, an updated road map showing usable bridges, or live video indicating where boats are urgently needed.
The study underscores that content in disaster response should be treated not merely as data, but as time-dependent, actionable information. SAGIN provides the infrastructure, CMAB enables real-time decisions, and FMAB strengthens the network by sharing those decisions across nodes. However, the authors caution that real-world factors — weather, drone endurance, energy management, hardware faults, cybersecurity, and human behaviour of rescuers — mean the simulation-based findings will require field validation before large-scale deployment.
Prelims Pointers
Mains Practice Question
Discuss the role of emerging AI-driven cooperative-caching technologies and Space Air Ground Integrated Networks (SAGIN) in strengthening real-time communication during disaster-response operations in India. What institutional and infrastructural challenges would such technologies face in Indian conditions?
GS Paper 3 · 15 marks · 250 words
MCQ Practice
The term “SAGIN”, recently in news in the context of disaster-response communication networks, refers to which one of the following?
Answer: B
SAGIN (Space Air Ground Integrated Network) is a three-tier communication architecture in which satellites (space), drones/UAVs (air), and base stations/emergency vehicles (ground) work together. Cooperative caching, supported by AI models such as CMAB and FMAB, helps reduce data-retrieval delay across this network, particularly valuable when ground infrastructure is damaged during disasters.
Article 05
GS Paper 3 — Science & Technology / Space
Why in News
In a new study published in Science Advances, an international team of researchers — led by Ashley Murphy of the Planetary Science Institute, with contributions from NASA Jet Propulsion Laboratory scientists including Kyle Uckert — has reported finding organic matter on Mars. Using NASA’s Perseverance rover, the team recorded a distribution of complex organic carbon within an ancient river valley in the red planet’s Jezero Crater.
Author attribution varies slightly across secondary news coverage; this enrichment follows the naming most consistently reported across independent science-press outlets at the time of writing.
What Was Found
Using the rover’s SHERLOC instrument (Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals), researchers detected a complex and hardy form of organic matter called macromolecular carbon (MMC) within fine-grained mudstones at an outcrop named Bright Angel, located along Neretva Vallis — an ancient river channel that once fed Jezero Crater’s western delta.
According to the study, this represents the most robust detection of organic material in Jezero Crater to date, and is the first detection of such material directly on a natural rock surface on Mars. Over the last decade, NASA’s Curiosity rover had found organic molecules in Gale Crater (a different location, more than 3,500 km away), proving that building blocks of life could be preserved in Mars’s ancient lakebed rocks. Perseverance’s earlier scans of the Jezero Crater floor had shown only localised and faint hints of organics.
A selfie taken by NASA’s Perseverance Mars rover in 2025 shows the Cheyava Falls rock to the rover’s left. (NASA)
The new evidence from Neretva Vallis suggests organic matter could be more widespread on Mars than previously thought. The fact that these organic materials were also found alongside minerals like carbonates and sulphates suggests they may have been trapped and preserved by water-driven processes billions of years ago.
Caveats & Significance
The study explicitly notes that these organics could have formed by geological (abiotic) processes rather than biological ones. The findings are described by the researchers as “astrobiologically compelling”, showing that complex carbon can survive the planet’s harsh radiation environment for billions of years — but the discovery does not prove that ancient life existed on Mars. It does, however, strengthen the case that the rocks examined are strong candidates for the Mars Sample Return programme.
The detection adds an important data point to the long-running search for evidence of past habitability on Mars, while underscoring the scientific caution required: complex organic carbon is necessary but not sufficient evidence of biological origin. Continued analysis, including eventual sample-return missions, will be required to distinguish abiotic from biotic explanations.
Prelims Pointers
Mains Practice Question
Discuss the significance of recent organic-carbon detections by the Perseverance rover in Jezero Crater for the search for past habitability on Mars. Why does the presence of complex organic matter not, by itself, constitute proof of past biological activity?
GS Paper 3 · 10 marks · 150 words
MCQ Practice
Consider the following statement: “The detection of macromolecular carbon by the Perseverance rover in Jezero Crater’s Neretva Vallis constitutes confirmed proof of the existence of ancient biological life on Mars.” Is this statement correct?
Answer: B
The study explicitly states that the detected macromolecular carbon could have formed through geological (abiotic) processes rather than biological ones. While the findings are described as “astrobiologically compelling”, they do not constitute confirmed proof of past life on Mars — only that complex organic carbon can survive and be preserved in the Martian environment.
Article 06
GS Paper 3 — Defence & Security / Science & Technology · GS Paper 2 — Governance
Why in News
Prime Minister Shri Narendra Modi, addressing the nation in his monthly radio programme Mann Ki Baat, said June 2026 had been a “landmark month” for India’s aviation and defence sectors, pointing to the maiden flight of the first made-in-India C-295 transport aircraft and the successful test of the indigenous Long-Range Land-Attack Cruise Missile (LRLACM). He also thanked citizens for supporting his appeal for austerity amid the West Asia crisis.
Indigenous Defence Manufacturing: C-295
The first India-assembled C-295 transport aircraft completed its maiden test flight on 10 June 2026 from the Tata-Airbus Final Assembly Line (FAL) in Vadodara, Gujarat. The Indian Air Force is procuring 56 aircraft under a ₹21,935-crore deal with Airbus Defence and Space, of which 16 were delivered in fly-away condition from Airbus’s facility in Seville, Spain, and the remaining 40 are being manufactured in India by Tata Advanced Systems Limited (TASL) in partnership with Airbus. The aircraft are intended to replace the IAF’s ageing Avro HS-748 fleet. The Prime Minister noted that the C-295 programme is giving a boost to India’s MSMEs and aerospace industry while creating employment opportunities.
Long-Range Land-Attack Cruise Missile (LRLACM)
The Prime Minister cited the successful flight-test of the indigenous LRLACM, conducted by the Defence Research and Development Organisation (DRDO) on 15 June 2026 from Dr. APJ Abdul Kalam Island off the coast of Odisha. All mission objectives were achieved, with telemetry validated by the Integrated Test Range at Chandipur. The missile, an evolution of the Nirbhay programme, is reported to have a range of approximately 1,000–1,500 km and is powered by the indigenous Manik turbofan engine. The Aeronautical Development Establishment (ADE), Bengaluru is the nodal laboratory, with Bharat Dynamics Limited (BDL) as a key production partner. “From the seas to the skies, our India is becoming increasingly secure and self-reliant,” the Prime Minister said, adding that all major subsystems of the missile had been indigenously developed.
Naval Inductions
The Prime Minister referred to the induction of INS Dunagiri, INS Sanshodhak, and INS Agray into the Indian Navy on 21 June 2026 in Kolkata, saying the warships were designed and built entirely in India. All three vessels were designed by the Navy’s Warship Design Bureau and built by Garden Reach Shipbuilders & Engineers (GRSE), Kolkata, with construction involving over 200 micro, small and medium enterprises (MSMEs).
Correction: The vessel names are INS Sanshodhak and INS Agray (not “Shanshak” or “Agrya” as commonly mis-transliterated in some reports).
| Vessel | Classification | Key Role |
|---|---|---|
| INS Dunagiri | 5th Project 17A Nilgiri-class stealth frigate | Blue-water combat; anti-submarine warfare; surface-to-surface missiles |
| INS Sanshodhak | 4th Survey Vessel (Large)-class ship | Hydrographic surveys, coastal mapping, maritime domain awareness |
| INS Agray | Anti-Submarine Warfare Shallow Water Craft (ASW-SWC) | Coastal anti-submarine warfare operations |
The commissioning ceremony coincided with International Yoga Day and World Hydrography Day (both 21 June), which the Prime Minister noted as a fitting coincidence given INS Sanshodhak’s hydrographic survey role.
West Asia Conflict and the Austerity Appeal
The Prime Minister thanked citizens for responding to his appeal for conserving resources amid the conflict in West Asia, noting that many people had begun carpooling, used public transport, postponed foreign travel, and increased the use of natural fertilizers, while some families had opted to recycle old gold rather than buy new jewellery for weddings.
Concerns / Balanced Perspective: While the government has framed the West Asia-related conflict and the broader US-Iran ceasefire framework (the 17 June 2026 MoU) as developments warranting domestic conservation measures, independent commentary — including criticism voiced by some US lawmakers regarding the broader MoU’s terms — has questioned how durable the ceasefire will prove and how long related global energy-price volatility may persist. The austerity appeal should be read in that context of continuing geopolitical uncertainty rather than as a closed chapter.
Other Highlights from Mann Ki Baat
The Prime Minister praised the efforts of biologist Dr. Purnima Devi Barman in changing public perceptions about Assam’s hargila bird (greater adjutant stork), and lauded community initiatives in Meghalaya to preserve the state’s living root bridges, for which India has formally submitted a UNESCO World Heritage nomination — the “Jingkieng Jri / Lyu Chrai Cultural Landscape” — now accepted for technical evaluation by the World Heritage Committee at its 49th session, expected in 2027.
He also commended women in Madhya Pradesh’s Rajgarh district for converting plastic waste into eco-bricks used for beautifying public spaces, and praised Nagaland’s ‘Baby League’ football initiative for children aged five to twelve. For Ganesh Chaturthi, the Prime Minister urged people to purchase idols crafted by Indian artisans, calling on buyers to check both the material used and the country of manufacture before purchase.
Taken together, the C-295 maiden flight, the LRLACM test, and the commissioning of three indigenously designed naval vessels mark a concentrated month of milestones for India’s defence-manufacturing ecosystem under the Atmanirbhar Bharat framework. The broader West Asia-linked austerity appeal, meanwhile, underscores how domestic economic behaviour continues to be shaped by external geopolitical developments whose resolution remains provisional.
Prelims Pointers
Mains Practice Question
Discuss the strategic significance of indigenous defence manufacturing programmes such as the C-295 transport aircraft and the LRLACM in furthering India’s Atmanirbhar Bharat vision in the defence sector. What structural challenges remain in achieving full self-reliance in critical defence technologies?
GS Paper 3 · 15 marks · 250 words
MCQ Practice
Match the following naval vessels commissioned in June 2026 (List I) with their correct classification (List II):
| List I (Vessel) | List II (Classification) |
|---|---|
| 1. INS Dunagiri | A. Survey Vessel (Large) |
| 2. INS Sanshodhak | B. Anti-Submarine Warfare Shallow Water Craft |
| 3. INS Agray | C. Project 17A Stealth Frigate |
Choose the correct match:
Answer: B (1-C, 2-A, 3-B)
INS Dunagiri is the 5th Project 17A Nilgiri-class stealth frigate; INS Sanshodhak is the 4th Survey Vessel (Large)-class ship for hydrographic surveys; INS Agray is an Anti-Submarine Warfare Shallow Water Craft. All three were built by Garden Reach Shipbuilders & Engineers (GRSE), Kolkata, and commissioned on 21 June 2026.