5 December 2025

• Diplomacy: Russian President Putin visits New Delhi for the 23rd India-Russia Annual Summit.
• Science: AstroSat completes a decade in orbit; UVIT instrument ranked second globally in far-ultraviolet capability.
• Archaeology: Karahan Tepe in Turkey yields the world's oldest human-faced monumental pillar carving.
• Defence cooperation: India and France conduct Exercise Garuda 25 involving Su-30MKI and aerial refuelling.
• Conservation: BNHS announces a January 2026 vulture release in Assam; both target species are Critically Endangered.

GS area: GS II - India's foreign policy; International relations

Russian President Vladimir Putin visited New Delhi for the 23rd India-Russia Annual Summit.

• Relationship designation: "Special and Privileged Strategic Partnership" formalised in 2010.
• Bilateral trade: Reached $68.7 billion in FY2024-25. The two countries have set a target of $100 billion by 2030.
• Nuclear cooperation: Russia is building Units 3 to 6 of the Kudankulam Nuclear Power Plant in Tamil Nadu. Units 1 and 2 are already operational.
• Connectivity corridors: International North-South Transport Corridor (INSTC) links India to Russia via Iran. The Chennai-Vladivostok Maritime Corridor connects Indian east-coast ports to Russia's Pacific port.
• Trade settlement: Both sides are exploring use of national currencies and Central Bank Digital Currencies to reduce dependence on dollar-denominated transactions.

Static linkage: India-Russia relations; INSTC; Nuclear energy in India

GS area: GS III - Science and technology; Space and strategic tech

India's National Quantum Mission was approved in 2023 with a budget of over Rs 6,000 crore for the period 2023 to 2031.

• Vision target: India aims to be among the top three quantum economies globally by 2035.
• Startup milestone: The mission targets 10 or more quantum startups achieving revenue of $100 million or more.
• Workforce gap: NITI Aayog estimates India needs to expand its quantum-skilled workforce by 10 times from the current base.
• Knowledge partner: IBM is partnering with NITI Aayog on the quantum workforce and technology roadmap.
• Application areas: Quantum computing for drug discovery and logistics, quantum communication for secure networks and quantum sensing for navigation and defence.

Static linkage: National Quantum Mission; Deep-tech policy; NITI Aayog

GS area: GS III - Internal security; Cybersecurity

Reported cybercrime cases rose from 52,000 in 2021 to 86,000 in 2023, according to NCRB data.

• Government response: The Centre has backed 20 states and Union Territories in setting up cybercrime infrastructure using the Nirbhaya Fund.
• Nirbhaya Fund: A non-lapsable corpus set up in 2013 following the Delhi gang-rape case. It funds projects for women's safety and, more recently, cyber safety infrastructure.
• Common cybercrime types: Financial fraud, OTP-based SIM swaps, investment scams and sextortion.
• Indian Cyber Crime Coordination Centre (I4C): MHA body that coordinates between states for cybercrime investigation, operates the Citizen Financial Cyber Fraud Reporting and Management System (CFCFRMS).

Static linkage: Cybercrime legislation; I4C; Information Technology Act 2000

GS area: GS III - Digital infrastructure; GS II - Government schemes

The Department of Posts has published a draft amendment proposing the DHRUVA system (Digital Hub for Reference and Unique Virtual Address).

• What it does: Assigns every location in India a unique digital address, functioning like a UPI identifier for physical locations.
• Technology backbone: DIGIPIN. A 10-character geocode that maps a 14 square metre patch of land anywhere in India.
• Scale: The system can generate 228 billion unique pins covering all of India's land area.
• Use cases: Last-mile delivery, emergency response, financial inclusion and voter roll accuracy.
• Parent body: Department of Posts under the Ministry of Communications.

Static linkage: Digital India; Postal network modernisation; Address-based public services

GS area: GS III - Environment; Biodiversity

The Bombay Natural History Society will release vultures in Assam in January 2026.

• Species 1: Slender-billed vulture: IUCN status: Critically Endangered. Fewer than 870 individuals estimated in the wild.
• Species 2: White-rumped vulture: IUCN status: Critically Endangered. Described as the fastest-declining bird species in the world.
• Primary threat: Diclofenac, a veterinary anti-inflammatory drug administered to livestock. Vultures that feed on carcasses of diclofenac-treated animals suffer fatal kidney failure.
• India's response: India banned diclofenac for veterinary use in 2006. Meloxicam is the approved alternative.
• Breeding programme: BNHS operates vulture conservation and breeding centres at Pinjore (Haryana), Rani (Assam) and Rajabhatkhawa (West Bengal).

Static linkage: Wildlife Protection Act; IUCN Red List; Diclofenac ban; Vulture conservation

GS area: GS III - Aviation policy; GS II - Government regulation

DGCA phased in new Flight Duty Time Limitations rules with implementation by November 2025.

• Purpose: Prevent fatigue-related aviation accidents by capping the number of hours aircrew can work in a duty period and requiring mandatory rest.
• Key provisions: 48 hours of continuous weekly rest mandated. The night period is defined as 00:00 to 06:00.
• DGCA: Directorate General of Civil Aviation, established in 1927. Made a statutory body in 2020 under the Aircraft Act.
• IndiGo impact: IndiGo faced large-scale flight cancellations following the rules' implementation because it did not have adequate crew reserves to cover routes under the stricter limits.
• Safety context: India has had fatigue-linked near-misses flagged in cockpit voice recorder investigations.

Static linkage: DGCA; Civil aviation regulation; Aircraft Act

GS area: GS III - Space technology; Science

AstroSat, India's first dedicated multi-wavelength space observatory, completed 10 years in orbit in 2025.

• Launch: 28 September 2015 on PSLV-C30.
• Orbit: 650 km circular orbit with a 6-degree inclination.
• Unique capability: AstroSat can observe the same source simultaneously in ultraviolet, optical and X-ray wavelengths. No other operational satellite at its launch could do this.
• UVIT instrument: The Ultraviolet Imaging Telescope on board AstroSat has the second-best far-ultraviolet imaging capability in the world after the Hubble Space Telescope.
• Scientific output: Studies of black holes, neutron stars, star-forming regions and hot stars.

Static linkage: ISRO missions; Space astronomy; PSLV programme

GS area: GS I - Modern Indian history; Social reform

The Mahad Satyagraha of 25 to 26 December 1927 is a landmark moment in India's social reform history.

• Led by: B.R. Ambedkar.
• What happened: On 20 March 1927 Ambedkar led a march to the Chavdar Tank in Mahad, Maharashtra, to assert the right of Dalits to use a public water source. On 25 December 1927 he publicly burned a copy of Manusmriti.
• Court outcome: In 1937 the Bombay High Court affirmed Dalits' right to use the Chavdar Tank.
• Significance: Mahad was the first organised civil disobedience action for caste equality. It predates the Poona Pact (1932) and prefigures Ambedkar's later constitutional work.
• December 25: The date of the Manusmriti burning is observed in some circles as Indian Women's Liberation Day.

Static linkage: B.R. Ambedkar; Social reform movements; Untouchability and caste

GS area: GS III - Defence; Bilateral relations

India and France conducted the 25th edition of Exercise Garuda at Air Base 118 Mont-de-Marsan in France.

• Participating aircraft: India fielded the Su-30MKI (air superiority fighter), the IL-78 (aerial refuelling tanker) and the C-17 Globemaster III (strategic transport).
• Exercise focus: Strike escort missions and aerial refuelling operations.
• Garuda series: A bilateral air exercise. France is a key defence partner for India and a fellow member of the Quad-adjacent Indo-Pacific grouping.
• France-India defence ties: India operates the Rafale fighters procured from France. The Scorpene-class submarines (Kalvari class) are also Franco-Indian.

Static linkage: India-France bilateral relations; Defence exercises; Indian Air Force equipment

GS area: GS I - World history; Art and archaeology

Researchers at Karahan Tepe in Turkey have found the world's oldest carving of a human face on a T-shaped monumental pillar.

• Location: Sanliurfa Province, southeastern Turkey, between the Tigris and Euphrates rivers.
• Date: 9400 to 8000 BCE. This places the site in the Pre-Pottery Neolithic A and B periods.
• Scale: One of 12 settlements in the Tas Tepeler (Stone Hills) archaeological project in the region.
• Relation to Gobekli Tepe: Gobekli Tepe, 35 km away, is older (10000 BCE) and better known. Karahan Tepe is smaller but more complex in terms of anthropomorphic representation.
• Significance: The human-faced T-pillar is the earliest known example of monumental human portraiture. It predates Egyptian art by several thousand years.
• T-shaped pillars: These are a distinctive feature of the Pre-Pottery Neolithic sites in the region. The T-shape is believed to represent a stylised human figure.

Static linkage: Neolithic period; World heritage archaeology; Early human civilisations

• INSTC progress: The International North-South Transport Corridor gained new momentum from the India-Russia summit. Iran is the central node. The corridor cuts freight time from India to Russia from 45-60 days (sea route) to around 25 days.