Defence Current Affairs MCQs

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The NATO is deploying the U.S. Patriot Missile Defence System to the southern province of Adana to strengthen regional air defence capabilities. PATRIOT stands for Phased Array Tracking Radar to Intercept on Target. It is a ground-based, mobile missile defence system developed by the United States. The system is designed to detect, track, and intercept aerial threats with high precision.

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Vayu Baan is India’s first helicopter-launched drone system developed by the Indian Air Force (IAF). It is a small, autonomous drone dropped from a moving helicopter mid-flight.After release, it unfolds wings, activates propulsion, and functions as surveillance (ISR) or precision-guided munition (kamikaze drone). The program is an indigenous Air-Launched Effects (ALE) project led by IAF’s Directorate of Aerospace Design (DAD). It aims to provide stand-off capability to identify and destroy targets beyond 50 km, keeping helicopters safe from MANPADS.

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Iran reportedly fired Qader cruise missiles targeting the USS Abraham Lincoln aircraft carrier, though reports indicate the ship was not hit. Qader is a medium-range, shore-based anti-ship cruise missile developed by Iran. It is an upgraded version of the Noor missile, which itself is based on the Chinese C-802 design. The missile strengthens Iran’s coastal defence and anti-access/area denial (A2/AD) capabilities in strategic regions like the Strait of Hormuz. It is part of Iran’s broader strategy to deter naval forces and protect its maritime interests.

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India is set to receive the remaining two units of the S-400 Triumf from Russia in 2026, completing the delivery under the deal. The system was procured under a $5.43 billion agreement signed in 2018 for five squadrons, out of which three are already inducted into the Indian Air Force. The S-400 is a modern long-range surface-to-air missile (MLR SAM) system developed by Russia. It can track and destroy multiple aerial targets at once within a range of up to 600 kilometres. The S-400 provides a powerful multi-layered air defence shield against threats like fighter jets, drones, cruise missiles, ballistic missiles, and stealth aircraft.

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Agray, an anti-submarine warfare shallow water craft, has been delivered to the Indian Navy. It is the fourth of eight ASW Shallow Water Crafts, aimed at strengthening coastal defence capabilities. The vessel is indigenously designed and built by Garden Reach Shipbuilders and Engineers. It is a reincarnation of the earlier INS Agray, a patrol vessel decommissioned in 2017. The ship has been constructed as per standards of the Indian Register of Shipping. It uses waterjet propulsion, making it among the largest Indian naval warships to use this technology. It is equipped with lightweight torpedoes, indigenous rocket launchers, and advanced shallow water SONAR systems for effective submarine detection.

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Yard 1280 (Shachi), the first of eleven Next Generation Offshore Patrol Vessels (NGOPVs), was launched at Goa Shipyard Limited (GSL), Goa on 31 March 2026. Construction of NGOPVs is happening concurrently at GSL, Goa and Garden Reach Shipbuilders & Engineers (GRSE), Kolkata. These indigenously built ships will augment the existing fleet of ten Offshore Patrol Vessels (OPVs)/Next-generation OPVs (NOPVs) for multi-domain operations including defence, surveillance, search and rescue, protection of offshore assets, Humanitarian Assistance & Disaster Relief (HADR), and anti-piracy missions.

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Rajnath Singh laid the foundation of the Large Cavitation Tunnel (LCT) at Naval Science and Technological Laboratory (NSTL) in Visakhapatnam. NSTL is a premier lab under the Defence Research and Development Organisation (DRDO). The Large Cavitation Tunnel (LCT) is a strategic facility for advanced hydrodynamic research and testing of naval systems. It will enable indigenous design, development, and testing of ships, submarines, and propulsion systems. It supports stealth, noise reduction, and next-generation underwater technologies. The facility allows both closed-loop (submarine) and free-surface (surface ship) simulations.

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INS Dhruv is India’s first dedicated nuclear missile tracking and ocean surveillance ship, enhancing strategic maritime capability. It was commissioned on 10 September 2021 and built by Hindustan Shipyard Limited (HSL) in collaboration with Defence Research and Development Organisation (DRDO) and National Technical Research Organisation (NTRO). The ship tracks ballistic missiles, gathers Electronic Intelligence (ELINT), and supports India’s missile defence programme. It provides early warning of missile threats and helps calibrate Ballistic Missile Defence (BMD) systems using trajectory data.

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The Defence Research and Development Organisation and Indian Navy conducted the maiden salvo launch of the Naval Anti-Ship Missile–Short Range (NASM-SR) off the Bay of Bengal near Odisha. NASM-SR is India’s first indigenous helicopter-launched anti-ship missile, replacing the Sea Eagle missile. It has been developed by Research Centre Imarat with other DRDO labs. The missile has a range of about 55 km and supports fire-and-forget capability in all weather conditions. It uses a solid booster and long-burn sustainer propulsion system.

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India successfully conducted the second flight trial of the Divyastra Missile from Dr. APJ Abdul Kalam Island, Odisha. Divyastra is an advanced Agni missile equipped with Multiple Independently Targeted Re-entry Vehicle (MIRV) technology. It was developed by India’s Defence Research and Development Organisation (DRDO). MIRV technology enables a single missile to carry multiple nuclear warheads that can strike different targets independently. MIRV technology was first developed by the United States in the 1960s.