PM Modi's four-day visit to Uzbekistan and Kyrgyzstan — his fourth visit to Tashkent — is India's most consequential Central Asia engagement since 2015, covering the SCO summit, the BRICS presidency handover, a UNSC seat contest, and a long-overdue India–Central Asia Summit.

Figure 1 — Uzbekistan: Location and Neighbours

Uzbekistan is doubly landlocked — it shares no border with any sea-access state — making the INSTC and Chabahar Port critical for India's connectivity to Central Asia. Image reproduced for educational use.

• 11 Agreements signed covering mining, tourism, defence, agriculture, pharmaceuticals, health, IT, ayurveda, digital infrastructure, UPI, and education.
• Uranium supply framework: Uzbekistan, which holds significant uranium reserves, agreed to a long-term supply framework for India's civil nuclear energy programme — a strategic resource-security deal.
• Ministerial-level JCS: The existing joint commission was elevated from secretary to ministerial level — a structural upgrade signalling enhanced bilateral priority.
• Buddhist sites: A Letter of Intent for restoration of Fayaz Tepa and Kara Tepa Buddhist monasteries in Uzbekistan — reflecting India's soft-power and civilisational diplomacy.
• Aral Sea grant: India announced $1 million for afforestation around the Aral Sea — environmental diplomacy addressing one of the world's worst ecological disasters.
• Shastri Memorial visit: PM Modi planted a tree at the Presidential Palace and paid tribute at the Shastri Memorial, reinforcing historical and people-to-people ties.

• Pakistan blocks India's overland access to Afghanistan and Central Asia; Chabahar Port (Iran) and the International North–South Transport Corridor (INSTC) are India's strategic workarounds.
• China's BRI has grown to $106 billion in China–Central Asia trade by 2025, dwarfing India's $2 billion — the connectivity gap is India's most significant structural challenge in the region.
• India's soft-power assets — IT, education, Bollywood, yoga — remain underutilised in Central Asia. The UPI extension and scholarship programmes are steps in the right direction.
• The India–Central Asia Summit last met in 2022; the delay has created a perception of declining Indian interest which this visit aims to correct.

• Trade at $2 billion is far below potential for a region rich in oil, gas, uranium, and rare-earth minerals — India needs concessional financing and connectivity investment, not just MoUs.
• The $5 billion trade target by 2030 is ambitious given the absence of a direct land route and the dominance of Russian and Chinese intermediary channels.
• INSTC operationalisation remains slow; US sanctions on Iran complicate Chabahar's full potential despite India's exemption for the port.

The Supreme Court's March 2026 ruling in the Rohith Nathan case found that the DoPT was practising "hostile discrimination" against OBC candidates from PSUs and private employment by including their salaries in the creamy layer income test — a standard not applied to government servants; the Centre now says retrospective implementation would cause a "cascading effect" across all categories.

• The March 11, 2026 ruling held that the 2004 letter created "hostile discrimination" — OBC candidates from PSU/private employment had salary income counted against them, while those with parents in government service did not face this.
• The court called the income test a "residual filter" — meaning salaries were always meant to be excluded; the 2004 letter wrongly reintroduced them for a subset of candidates.
• The court directed the government to create supernumerary posts for OBC candidates who had been wrongly denied non-creamy-layer status since 2015.
• Within six months, the Centre was to implement the ruling across CSE (Civil Services Examinations) batches from 2015 onwards.

• 22 additional court judgments have already been passed applying the Rohith Nathan principles; 12 new cases have been filed by candidates who had not previously approached courts.
• Over 950 CSE 2025 candidates were about to start their Foundation Course based on the old reading of the income test.
• Retrospective adjustment would create seniority disputes and could disadvantage unreserved category candidates — the cascading effect the Centre warns about.
• The Centre also argues that excluding salary income entirely could allow OBC candidates with parents earning up to ₹1 crore to claim non-creamy layer status.

• OBC candidates argue the DoPT was applying the discriminatory standard arbitrarily — and that the Centre had ample time (since the issue was pending for over a decade) to flag implementation concerns earlier.
• The delay in implementing a Supreme Court judgment on reservation rights raises questions about administrative accountability and equitable governance.
• The case also highlights the absence of a uniform equivalence framework for PSU posts vis-à-vis government posts — a structural gap that has persisted since the 1993 OM.

The Supreme Court's direction to the Ghaziabad Police to provide journalist Abhishek Upadhyay with a copy of his FIR revives a fundamental question: What does Indian law say about an accused person's right to access an FIR — and how have courts shaped this right over time?

• Delhi HC (2010) — Court on Its Own Motion v. State: Directed Delhi Police to upload FIRs on its website within 24 hours; sensitive offences may be withheld through a reasoned DCP-level order.
• HP HC (2014) — Rama Nand Rathore v. State of HP: A person who suspects they are named in an FIR can seek a certified copy from the police within 24 hours; FIRs to be uploaded online.
• Supreme Court (2016) — Youth Bar Association of India v. UoI: Extended the directions pan-India; FIRs must be uploaded on police websites within 24 hours (up to 72 hours where connectivity issues exist); accused entitled to access FIR before Section 207 CrPC stage.

• Sexual offences, POCSO cases, and terror offences are identified as "sensitive" — FIRs may be withheld from online publication.
• Decision must be taken by an officer not below DSP/equivalent rank.
• Even in sensitive cases, the accused or their authorised representative may apply to the magistrate for a certified FIR copy within three days.
• Prelims hook: The SC ruling in Youth Bar Association is the leading case on FIR access; the BNSS (Section 173) is the current statutory framework replacing CrPC Section 154.

Defence Minister Rajnath Singh's tribute to Rani Avantibai Lodhi at a centenary event in Lucknow renews attention on one of the lesser-known but fiercely courageous women leaders of the 1857 Revolt — a queen who fought the British not just for political sovereignty but against a system that underestimated women.

Figure 2 — Government of India Commemorative Stamp (2001): Rani Avantibai

The 2001 commemorative stamp is among the most visible acknowledgements of Rani Avantibai's legacy in independent India. Image reproduced for educational use.

• Rani Avantibai belongs to a group of women leaders who took up arms in 1857, alongside Rani Lakshmibai of Jhansi and Begum Hazrat Mahal of Awadh.
• Unlike Lakshmibai (who has been widely celebrated), Avantibai remains relatively obscure in mainstream historical narratives despite comparable courage and sacrifice.
• The Doctrine of Lapse, employed by Lord Dalhousie as Governor-General, was a primary trigger for the 1857 Revolt — it denied rulers the right to adopt heirs.
• Princely states affected by the Doctrine: Satara (1848), Jaitpur, Sambalpur (1849), Baghat, Udaipur (1852), Jhansi (1853), Nagpur (1854), Awadh (1856).

• The tribute at a public event underlines the growing recognition of regional and community-specific freedom fighters who were sidelined in dominant historical narratives.
• The Lodhi community's celebration of Avantibai also reflects identity politics in Uttar Pradesh, where community pride and electoral mobilisation intersect with historical memory.
• For UPSC, Rani Avantibai is examinable in the context of: (1) the 1857 Revolt's spread and causes; (2) women in the freedom movement; (3) princely states and the Doctrine of Lapse.

India's finalisation of the Javelin anti-tank guided missile (ATGM) deal with the US — 16 years after the process began — illustrates the structural complexities of Indian defence procurement: technology transfer disputes, indigenisation imperatives, shifting strategic partnerships, and operational urgency rarely aligning simultaneously.

Figure 3 — The Javelin ATGM System

The Javelin is a fire-and-forget, man-portable ATGM using infrared guidance — once locked on, the operator can immediately seek cover, unlike earlier wire-guided systems. Image reproduced for educational use.

• 2010: Defence Minister A.K. Antony first announces Javelin procurement intent via the US Foreign Military Sales (FMS) route, including Transfer of Technology (ToT).
• 2013–14: US refuses 100% ToT on the core seeker technology → India pivots to Israel's Spike ATGM (manufactured by Rafael Advanced Defense Systems).
• 2014: Defence Acquisition Council clears purchase of 8,000+ Spike ATGMs; long contract negotiations follow.
• 2017: ₹500 million Spike order cancelled — concerns over performance in trials, ToT terms, and progress in India's own DRDO man-portable ATGM programme.
• 2018: Spike deal briefly revived after PM Netanyahu's India visit; shelved again.
• 2019: Emergency procurement of limited Spike-LR (4th gen) units to plug operational gap.
• 2023: Kalyani Rafael Advanced Systems (JV between Kalyani Group and Rafael) wins ₹287.51 crore MoD order for Spike systems.
• February 2025: Javelin JV (Lockheed Martin + Raytheon) signs MoU with Bharat Dynamics Limited (BDL) for co-assembly and co-production in India.
• May 2025: Operation Sindoor accelerates negotiations — post-conflict urgency.
• November 2025: Washington officially clears the Javelin sale.
• August 2026: Deal finalised via the US FMS process.

• Technology transfer: India demands meaningful ToT on critical technologies; the US historically restricts core seeker/guidance tech even under FMS — a persistent friction point.
• Indigenous vs import: DRDO's own ATGM programme (Nag, Helina/Dhruvastra) has faced delays; the Javelin deal reflects the gap between indigenisation timelines and operational urgency.
• FMS route: The US FMS (Foreign Military Sales) route allows government-to-government sales bypassing commercial negotiations; it is generally faster but offers less flexibility on ToT.
• Bharat Dynamics Limited (BDL): India's premier missile PSU; the co-production arrangement with Javelin JV is consistent with the 'Make in India' defence policy.
• Operation Sindoor effect: The May 2025 military operation accelerated strategic urgency — illustrating how conflict readiness often overrides procurement proceduralism.

A decade-old study published in the Journal of Threatened Taxa confirms that relocating a livestock carcass dump just 2.4 km away from high-tension power lines near Dehradun dramatically reduced vulture electrocution deaths — offering a simple, scalable conservation intervention for one of India's most endangered bird groups.

• 34 surveys conducted between May 2011 and February 2014 in the Sudhauwala region, recording 743 individual vultures across five species.
• 46 vulture carcasses attributable to electrocution found near high-tension power transmission infrastructure.
• Highest mortality: Himalayan Griffon (Gyps himalayensis), followed by Eurasian Griffon (G. fulvus) and Cinereous Vulture (Aegypius monachus).
• Action: In April 2015, local authorities relocated the carcass dump 2.4 km away from the high-risk electricity infrastructure.
• Outcome: Post-relocation monitoring recorded zero electrocution deaths; other raptors — black kite (Milvus migrans) and crested serpent eagle (Spilornis cheela) — also benefited.

• Electrocution is the most under-reported anthropogenic threat to vultures globally, according to the study — researchers focus on NSAIDs and poisoning while power infrastructure risk is overlooked.
• Vultures are particularly vulnerable because their large wingspans can simultaneously contact two conductors or a conductor and a grounded pole, causing electrocution.
• The study was conducted on a non-systematic basis — the full extent of electrocution mortality across India remains unknown and no nationwide study has been conducted post-2015.

• The intervention — a simple carcass dump relocation — cost virtually nothing compared to captive breeding or pharmaceutical interventions, yet produced measurable results.
• The Wildlife Institute of India (Dehradun) was involved in the study — India's premier wildlife research institution.
• UPSC angle: Vulture conservation connects to: (1) biodiversity and extinction; (2) ecosystem services (disease control); (3) human-wildlife conflict; (4) the diclofenac ban and drug regulation; (5) Project Vulture (MoEFCC).

Every time an extreme weather event strikes, scientists race to determine how much climate change contributed. This field — extreme event attribution — has grown rapidly but faces fundamental methodological limits that affect both science and policy, including legal liability for carbon emitters.

• Short-duration, sub-daily events: Intense bursts of rain lasting an hour or less are hard to model — most global climate models cannot capture fast-changing processes at this scale.
• Localised events: Land-sea breezes, mountain wind systems, and hyperlocal phenomena require model resolutions of around 10 km or less — currently beyond most operational models.
• Limited historical records: Without long-term hourly or sub-hourly rainfall data for a specific location, it is impossible to define the "natural variability" baseline accurately.
• What counts as 'extreme'? A drought that seems extreme over 20 years may not appear extreme over 500 years — there is no scientific consensus on the definition of 'extreme' at all timescales.
• Model uncertainty: Attribution models cannot perfectly represent a climate that never existed; counterfactual simulations carry inherent uncertainty.

• Attribution science is increasingly being used to assign legal liability to carbon emitters — "carbon majors" — for specific climate damages. The question is whether such findings can withstand judicial scrutiny.
• Climate scientists argue that courts should focus on preparedness and adaptation — improving early warning systems and resilience infrastructure — rather than on attribution-based liability, which is fraught with uncertainty.
• The IPCC Sixth Assessment Report (AR6) itself acknowledges that local-scale attribution remains one of the most challenging areas of climate science.

Using the Very Large Telescope, astronomers have found strong evidence of a companion star to Betelgeuse — named Betelgeuse B — which may explain why this famous red supergiant's brightness mysteriously dims and brightens on a six-year cycle.

Figure 4 — Artist's impression of Betelgeuse and its newly discovered companion star

Betelgeuse B is estimated to be 2.6–3.1 times the mass of our Sun; its periodic transit in front of Betelgeuse may explain the six-year brightness cycle previously attributed to internal pulsations. Image reproduced for educational use.

• Betelgeuse: A red supergiant star in the Orion constellation, around 700 light-years from Earth; one of the brightest and largest stars visible to the naked eye; a candidate for a supernova explosion (though not imminent on human timescales).
• Betelgeuse B: The companion star, estimated at 2.6–3.1 solar masses; appears to be a young star whose periodic blocking of Betelgeuse's light causes the six-year brightness variation.
• Instrument: Very Large Telescope (VLT) — operated by the European Southern Observatory (ESO) in Chile, one of the world's most powerful ground-based telescopes.
• Significance: Binary star systems are common, but confirming a companion for Betelgeuse — one of the most observed stars — would significantly revise models of its evolution and eventual fate.
• Prelims hook: Betelgeuse is in the constellation Orion. The VLT is in the Atacama Desert, Chile. The dimming event of 2019–20 (the "Great Dimming") was caused by a dust cloud, not a companion — the six-year cycle is a separate, longer-period phenomenon.

A study published in Nature reports that astronomers have observed the quantum electrodynamics (QED) phenomenon of vacuum birefringence around a magnetar — almost confirming a 1930s prediction that empty space is not truly empty, but rather a seething soup of virtual particles.

• Vacuum birefringence: In the presence of extremely strong magnetic fields, the quantum vacuum (empty space) behaves like a crystal — splitting light into two paths by rotating its polarisation. Predicted by Heisenberg and Euler in the 1930s.
• Magnetar 1E 1547.0-5408: Located 14,700 light-years away; one of a rare subclass that also emits radio pulses; its extreme magnetic field (88 trillion times Earth's) makes it the ideal laboratory.
• Evidence: NASA's IXPE (Imaging X-ray Polarimetry Explorer) satellite detected polarisation levels up to 80% in X-rays from the magnetar — consistent with QED predictions of vacuum birefringence.
• Instruments used: IXPE (NASA), NICER (International Space Station), and Murriyang radio telescope (Australia).
• Significance: Confirms that the quantum vacuum is an active medium; could help scientists build better maps of the universe and understand space-weather phenomena.
• Prelims hook: QED — Quantum Electrodynamics — is the theory that describes how light and matter interact at the quantum level. IXPE was launched in 2021 specifically to study X-ray polarisation in extreme cosmic environments.