Current Affair Category: Defence & Security

Reactor Pressure Build-up refers to the increase in pressure within a reactor vessel, typically a nuclear reactor or a chemical reactor, due to various operational or abnormal conditions. It is a critical safety concern because excessive pressure can lead to equipment damage or catastrophic failure.  Causes of Reactor Pressure Build-up Thermal Expansion of Fluids As […]

Why in News? INS Udaygiri, a stealth frigate under Project 17A, was delivered to the Indian Navy on July 1, 2025, by Mazagon Dock Shipbuilders Limited (MDSL). As the second vessel of the Nilgiri-class stealth frigates, it marks a significant milestone in India’s Aatmanirbhar Bharat (self-reliance) initiative, boasting 75% indigenous content. The warship enhances the […]

Why in News?  The Strait of Hormuz has been a focal point in recent news due to escalating tensions between Iran, Israel, and the United States, particularly following U.S. airstrikes on Iranian nuclear facilities in June 2025. Relevance : UPSC Pre &  Mains Prelims : Zonal council Mains :   GS 2 What is the Strait of […]

  Why in  News ? After the US carried out airstrikes on Iran’s nuclear facilities, Tehran has issued warnings of potential retaliation targeting US military bases in West Asia, escalating regional tensions. Relevance : UPSC Pre &  Mains Prelims : Military Bases Mains :   GS 2/GS 3 Security Overview: The U.S. operates an extensive network […]

Why in News?  On June 21, 2025, the U.S. launched Operation Midnight Hammer, targeting Iran’s nuclear facilities at Fordow, Natanz, and Isfahan using B-2 Spirit stealth bombers armed with GBU-57 Massive Ordnance Penetrator bombs. Former President Donald Trump hailed it as a “spectacular military success,” claiming Iran’s nuclear capabilities were “obliterated.” The 40-hour B-2 mission, […]

Why in news? The Stockholm International Peace Research Institute (SIPRI) in its 2025 Yearbook reports that nearly all nine nuclear-armed states—the United States, Russia, the United Kingdom, France, China, India, Pakistan, North Korea, and Israel—continued intensive nuclear modernization programs in 2024. Key Findings: Global Nuclear Inventory: As of January 2025, the global nuclear warhead inventory […]

Why in News?  The commissioning of INS Arnala on June 18, 2025, in Visakhapatnam is a landmark event for the Indian Navy, boosting its coastal defense capabilities and advancing the Aatmanirbhar Bharat initiative. As the first of 16 indigenously built Anti-Submarine Warfare Shallow Water Craft (ASW-SWC), INS Arnala strengthens India’s ability to counter submarine threats […]

Why in News ? A French private company and the Nuclear Power Corporation of India (NPCIL) are addressing challenges related to the construction of six nuclear power reactors in Jaitapur, Maharashtra. Relevance : Pre & Mains Prelims: NPCIL/CLNDA/CSC Mains :  GS 3 Understanding Nuclear Liability Legislation: Nuclear liability laws ensure compensation for victims of nuclear […]

Operation True Promise 3: Operation True Promise 3 was a major Iranian retaliatory strike on Israel, launched on June 13, 2025, by the Islamic Revolutionary Guard Corps (IRGC). It involved over 150 ballistic missiles and 100+ drones targeting Israeli military bases, airfields, intelligence centers, and civilian areas. The attack injured 63 Israelis, killed 24 civilians, […]

Why in News? Arambai Tenggol (AT), a radical Meitei group in Manipur, has been in the spotlight due to its alleged involvement in violent incidents, looting of weapons, and communal tensions in the state. The recent arrest of its self-styled ‘army chief,’ Asem Kanan Singh, has drawn attention to the group’s activities and its role […]