Defence & Armed Forces

India and Indonesia have reached a major defence-cooperation milestone with Indonesia becoming the first foreign buyer of India’s indigenous Astra Mk-I BVRAAM. The deal, announced during Prime Minister Narendra Modi’s Indonesia visit, is important for UPSC because it connects Atmanirbhar Bharat in defence, air-combat technology, India’s defence exports, India-Indonesia ties and the Indo-Pacific security environment.

A newspaper analysis has argued that artificial intelligence, autonomy and algorithmic warfare are rapidly reshaping modern battlefields, with examples from Ukraine, West Asia and emerging US autonomous aircraft programmes showing how software, drones, sensors and real-time data are compressing the military decision cycle. The issue is important for UPSC because it links AI warfare, national security, drone swarms, defence indigenisation, cyber warfare, space-based surveillance, start-up-led innovation and the ethics of autonomous weapons.

The Armed Forces are reportedly seeking a higher retention percentage for Agniveers after completion of their four-year tenure, with the Navy likely to seek around 75% retention and the Army and Air Force around 50%, against the current approved ceiling of 25%. The issue is important for UPSC because it connects military manpower planning, national security, defence reforms, youth employment, training costs, operational readiness and post-service rehabilitation.

The Indian Navy is set to commission Mahendragiri (F38), its sixth indigenous Project 17A stealth frigate, at Visakhapatnam. Designed by the Navy’s Warship Design Bureau and built by Mazagon Dock Shipbuilders Ltd, the warship highlights India’s shift from a “buyer’s navy” to a “builder’s navy” and strengthens India’s maritime capability in the Indo-Pacific.

On 21 June 2026, the Indian Navy commissioned three indigenously built warships at Kolkata in a single ceremony — the stealth frigate INS Dunagiri, the survey vessel INS Sanshodhak, and the anti-submarine craft INS Agray, all built by GRSE. This article explains the three distinct strategic roles of these ships, decodes Project 17A stealth frigates, hydrographic survey vessels and Anti-Submarine Warfare Shallow Water Craft, and situates the event within India's Atmanirbhar Bharat defence drive and its maritime strategy in the Indian Ocean Region.

An Indian Air Force AN-32 transport aircraft crashed while landing at Jorhat in Assam, killing five IAF personnel, while one co-pilot survived and is under treatment. The incident has brought attention to the AN-32 fleet’s role in military logistics, its modernisation history, safety record and India’s larger need for reliable tactical airlift capability.

On June 10 and 11, 2026, India's Defence Research and Development Organisation (DRDO) carried out three consecutive flight-tests off the Odisha coast that validated a multi-layered Ballistic Missile Defence (BMD) system and successfully conducted the maiden test of the Naval Anti-Ship Missile-Medium Range (NASM-MR). The Ministry of Defence said the interceptors engaged their targets up to the Intercontinental Ballistic Missile (ICBM) class, placing India among a small group of nations with such capability. This article explains India's BMD programme, the difference between the AD-1 and AD-2 interceptors, the science of endo- and exo-atmospheric interception, the significance of NASM-MR, and why this matters for India's strategic deterrence.

The Zojila Tunnel, beneath the avalanche-prone Zojila Pass on National Highway-1, achieved its final excavation breakthrough on 9 June 2026 when engineers blasted through the last stretch of rock to link the Kashmir and Ladakh ends. Once operational, this high-altitude tunnel will provide India's first year-round road link between the Kashmir Valley and Ladakh, ending the region's winter isolation. This article explains the project's features, the strategic and defence significance of the route, India's broader Himalayan border-connectivity push, and the engineering and economic dimensions of this landmark.

The Stockholm International Peace Research Institute (SIPRI) has released its Yearbook 2026, estimating that India's nuclear stockpile has grown to about 190 warheads as of January 2026 (up from 180 a year earlier), moving slightly ahead of Pakistan's estimated 170. SIPRI also assessed that India may have begun deploying a small number of warheads on a nuclear-armed submarine conducting deterrence patrols, hinting at a shift in its long-standing peacetime posture. This article explains the report's key findings, India's nuclear doctrine of credible minimum deterrence and No First Use, the structure of India's nuclear triad and second-strike capability, its command-and-control system, and India's position on global non-proliferation treaties.

India and Australia held the 2nd India-Australia Defence Ministers' Dialogue in New Delhi on 1 June 2026, advancing maritime domain awareness, defence co-production and Indo-Pacific security cooperation. This explainer covers the dialogue's key outcomes, the Comprehensive Strategic Partnership, the Mutual Logistics Support Arrangement, the Quad and IPMDA, major bilateral exercises and the full UPSC relevance for Prelims and Mains. UPSC Syllabus Mapping GS Paper 2 (International Relations): Bilateral, regional and global groupings and agreements involving India and/or affecting India's interests; India and its strategic partners; effect of policies and politics of developed and developing countries on India's interests. GS Paper 3 (Security): Security challenges and their management in border areas; role of external state actors; various security forces and agencies and their mandate; maritime security. Prelims: Defence exercises, institutional mechanisms (2+2, Defence Ministers' Dialogue), Quad, IORA, IPOI, IPMDA, IFC-IOR, UNCLOS, ECTA/CECA.

On March 27, 2026, the Defence Acquisition Council (DAC) chaired by Defence Minister Rajnath Singh gave the green signal to major defence purchases worth Rs 2.38 lakh crore. The biggest item is the approval to buy five additional S-400 long-range surface-to-air missile systems from Russia for the Indian Air Force. The clearance also covers medium transport aircraft and remotely piloted strike aircraft. This comes after the S-400 systems proved their worth in Operation Sindoor and is part of India’s ongoing effort to strengthen air defence amid rising regional threats.

The Standing Committee of the National Board for Wildlife has recommended approval for 12 key defence projects in Ladakh's protected wildlife sanctuaries, citing the need for high operational preparedness due to increasing assertiveness by China's People's Liberation Army along the Line of Actual Control, following lessons from the 2020 border conflicts.