Current Affairs 15 June 2026

At the Combined Graduation Parade (CGP) of the 217th Course at the Air Force Academy (AFA), Dundigal (near Hyderabad), the Indian Air Force marked a historic first — the commissioning of its first batch of women officers trained through the National Defence Academy (NDA) route. Defence Minister Rajnath Singh, reviewing the parade, said growing women’s participation was making the force “more balanced and stronger,” and invoked Operation Sindoor as a demonstration of the IAF’s precision-strike capability.

• First NDA-route women officers: the women cadets had passed out of the NDA (Khadakwasla, Pune) on 30 May 2025, then underwent branch-specific training at AFA Dundigal before commissioning — the first time in IAF history that women cadets from the NDA graduated as officers.
• Five women officers were awarded wings: 2 in the fighter stream and 3 in maintenance / ground-duty branches.
• 231 flight cadets graduated in all — 194 men and 37 women.
• Wings were also awarded to 9 Indian Navy officers, 3 Indian Coast Guard officers, and 2 trainees from Vietnam; 3 officers received navigation brevets.
• Top honours: Flying Officer Ashish Kumar Yadav won the President’s Plaque and the Nawanagar Sword of Honour (overall first, Pilot Course); Fg Off Ekta Gupta topped the Navigation stream; Fg Off Divyanshi Singh topped the Ground Duty branches.
• In an unscheduled highlight, the Chief of the Air Staff, Air Chief Marshal Amar Preet Singh, personally flew one aircraft of a three-aircraft Kiran formation flypast over the parade.

• Women were first commissioned into the IAF in 1991–92 under the Short Service Commission (SSC), initially in non-combat branches.
• India’s first three women fighter pilots — Avani Chaturvedi, Bhawana Kanth and Mohana Singh — were commissioned into the fighter stream in 2016 under an experimental scheme later made permanent.
• Permanent Commission for women was secured through the Supreme Court’s rulings — Secretary, Ministry of Defence v. Babita Puniya (2020) for the Army, with parallel relief extending opportunities across services.
• The NDA was opened to women following the Supreme Court’s interim order in Kush Kalra v. Union of India (August 2021); the first women cadets joined the NDA in 2022 — this 217th Course is the first to commission them.

• Institutionalising gender integration: the NDA route (vs. SSC-only entry earlier) places women on the same foundational training pathway as men from the cadet stage.
• Combat normalisation: women entering the fighter stream through the academy pipeline signals a structural, not tokenistic, shift.
• Demographic dividend & talent pool: widening recruitment improves the quality and depth of the officer cadre.
• Constitutional alignment: advances Article 15 (non-discrimination) and Article 16 (equality of opportunity in public employment).

The Defence Research and Development Organisation (DRDO) — the R&D wing of the Department of Defence R&D (DDR&D), Ministry of Defence — conducted three consecutive flight tests demonstrating a multi-layered Ballistic Missile Defence (BMD) system and the maiden flight of the Naval Anti-Ship Missile – Medium Range (NASM-MR), strengthening India’s defences against aerial and maritime threats.

• Multi-layered BMD: interceptor missiles successfully engaged and destroyed designated targets, demonstrating layered interception. (The source describes engagement of threats “up to ICBMs”; in practice India’s Phase-II interceptors are designed for long-range / IRBM-class threats — not yet full intercontinental range.)
• NASM-MR maiden test: first flight of an indigenous medium-range anti-ship missile, demonstrating enhanced anti-ship strike capability at medium ranges.
• Trials were witnessed by senior officials of DRDO and the Armed Forces; the Defence Minister and DRDO leadership lauded the combined effort of scientists, industry partners and the Services.

• A two-tiered, two-phase indigenous shield conceived after the late-1990s missile environment.
• Phase-I (lower-tier, against ~2,000 km-class threats): PAD/PDV (Prithvi Air Defence / Prithvi Defence Vehicle) for exo-atmospheric (outside the atmosphere) interception, and AAD (Advanced Air Defence) for endo-atmospheric (within the atmosphere) interception.
• Phase-II (upper-tier): AD-1 and AD-2 interceptors targeting longer-range / IRBM-class missiles.
• Success places India among a select group — alongside the US, Russia, Israel and China — with demonstrated BMD capability.

• NASM-SR (Short Range) was flight-tested earlier (2022) as an indigenous air-launched anti-ship missile (e.g., from the Sea King helicopter), replacing ageing imported systems.
• NASM-MR extends this to medium ranges, deepening indigenous anti-ship strike options for the Navy and reducing import dependence.

• Strategic deterrence: a credible BMD raises the cost of a first strike and stabilises deterrence.
• Atmanirbharta in defence: indigenous interceptors and anti-ship missiles cut reliance on imports and build a domestic missile-tech base.
• Maritime security: NASM-MR strengthens sea-denial in the Indian Ocean Region amid a contested maritime environment.

As reported, India lodged a strong protest after US Navy strikes on three merchant tankers — Marivex, Settebello and Jalveer — carrying Indian crew off the coast of Oman, in which three Indian seafarers aboard Settebello were killed. India summoned a US Embassy representative; in a subsequent exchange, the US Secretary of State reportedly told the External Affairs Minister that violations of the American “blockade” and the “illicit transport of Iranian oil” would not be tolerated, while India called the lethal actions against commercial shipping unjustified.

• An estimated 3.5 lakh Indian seafarers serve worldwide; the government estimates over half are in active service, mostly on foreign-flagged ships.
• India is among the largest single suppliers of seafarers globally (commonly cited at roughly 9–10% of the world’s seafarers).
• The Directorate General (DG) of Shipping estimated about 23,000 Indian seafarers in the broader Gulf region, with the UAE accounting for more than half.
• The IMO estimated roughly 20,000 seafarers of all nationalities stranded on ships in the Persian Gulf during the crisis.

• The vessels — all tankers carrying Indian crew — were struck with precision munitions; damage was reportedly above the waterline, disabling propulsion/manoeuvre without sinking them.
• Marivex was struck off Duqm (~400 nm from the Strait of Hormuz); the others off Shinas, Oman, closer to the strait.
• US Central Command stated the crews refused instructions and were transporting Iranian oil in violation of the blockade; the manager of Settebello contradicted this, saying the ship had been stationary for days with no Iranian-oil link.

• Foreign flags: the tankers flew flags of convenience (with deep Indian ownership/management links), weakening any direct legal basis for Indian intervention.
• The belligerents are the US and Iran: unlike action against Somali pirates or Houthi attacks, India cannot militarily confront a major power.
• Precedent of past protection: under Operation Sankalp (launched 2019 in the Gulf of Oman after tanker attacks; later extended for Red Sea / Houthi threats), the Indian Navy and Coast Guard did escort and protect merchant ships, including foreign-flagged ones with Indian crew.
• A blanket ban on Indian seafarers serving on Hormuz-transiting vessels is neither the industry’s demand nor practical — it would hit employment, global supply chains and India’s standing as a leading crew supplier.

• Calibrated, evidence-based approach: periodic risk assessments, clear advisories, mandatory informed consent for high-risk deployments, and enhanced security protocols — rather than outright bans.
• Inter-ministerial maritime-security framework: bring together maritime regulators, MEA, defence, intelligence, shipowners’ associations and seafarers’ unions for real-time decisions.
• Welfare & war-risk protections: full honouring of war-risk compensation, P&I-club insurance cover, dedicated family contact points, and no professional penalty for declining declared war-risk assignments.
• Diplomatic & multilateral pressure: raise concerns at the UN, IMO and regional maritime-security platforms, and coordinate with flag States and operators.

African grey foam-nest tree frog (Chiromantis xerampelina) and its arboreal foam nest

A study published in the journal Evolution (2 June) on the African grey foam-nest tree frog (Chiromantis xerampelina) found that when many males help a single female build a foam nest, the result is a larger, moister nest with higher tadpole survival — cooperation, not chaos.

• For frogs that lay eggs in water, predation is brutal — about 98% of eggs are eaten by fish and insects before hatching.
• This species took the nest into the air: in the rainy season, a female on a branch over a pool secretes a fluid that the mating pair whisk with their hind legs into a bubbly froth.
• Eggs hatch inside the foam; tadpoles later drop through the bottom into the pool below.

• A single female is often joined by a dozen or more males; more churning legs build nests up to three times larger than a single pair’s.
• Smaller nests dry out quickly, killing eggs; larger nests retain moisture longer, raising survival.
• DNA testing showed paternity is split in crowded nests — by cooperating, each male ensures at least some of his offspring survive rather than losing all to a dried-out nest.
• The males’ skin and fluids are suspected to contain surfactants (detergent-like compounds) that keep the bubbles from popping.
• Research was led by teams from three Australian universities, studying the frogs in South Africa.

• Arboreal foam-nesting is a predator-avoidance strategy; foam also buffers temperature and desiccation.
• It is an example of cooperative breeding shaped by reproductive trade-offs — relevant to debates on kin selection and mutual benefit.
• Related foam-nesting frogs occur in India (e.g., the genera Chiromantis / Polypedates), making the mechanism a useful comparative example.
• The surfactant insight has biomimetic potential for stable, long-lasting foams.

Chocolate-chip sea star (Protoreaster nodosus)

Scientists described a remarkable light-focusing structure in the chocolate-chip sea star (Protoreaster nodosus). At each arm tip, a skeletal element contains an array of cone-shaped structures that behave like optic fibres.

• The cone array transmits about 70% of incident light and concentrates it nearly 3× at the base.
• The array captures light from a wide 120° field of view and effectively brightens it about 8× inside the arm.
• Researchers suggested the design could inspire lightweight optical sensors and displays.

• Sea stars are echinoderms; their skeleton is built of calcite ossicles (magnesium-rich calcium carbonate).
• Echinoderms are known for biological optics — e.g., brittle stars (Ophiocoma) use calcite microlenses embedded in their skeleton.
• This is a case of biomimetics / biomimicry — engineering inspired by biological structures — relevant to optics, materials science and sensor design.

New research highlights how social ant colonies limit the spread of pathogens — through chemical “social immunity,” dramatic behaviours like limb amputation, and even re-engineering nest architecture during an epidemic — strategies strikingly similar to human public-health measures.

• In many ant species, individuals spread antimicrobial secretions from the metapleural gland on themselves, on larvae and on nestmates, giving the whole colony baseline protection.

• Researchers (University of Lausanne) found that when a worker’s leg is injured, nestmates amputate it by repeated bites at the joint, removing a route for disease-causing microbes (Current Biology, 2024).

• In a 2025 study (Science), a single queen and ~200 workers built a nest; every ant wore a miniature QR code tracked by cameras, with nest structure mapped by micro-CT scans.
• After 20 workers were exposed to a pathogenic fungus and introduced, infected ants self-isolated — leaving the nest more often and spending more time outside.
• The colony changed nest architecture: entrances were spaced further apart, tunnels grew longer, and there were fewer connections between chambers — increasing segregation.
• High-value individuals — the queen and nurse ants — had significantly lower exposure to foragers and remained healthy.

• These are evolved analogues of human non-pharmaceutical interventions — quarantine, masking, hand-washing and altering contact networks.
• They show that collective discipline and division of labour — classic eusocial traits — are central to epidemic control.
• Studying social immunity can inform epidemiological modelling of how network structure shapes disease spread.

Global density map of arbuscular mycorrhizal (AM) fungal networks

A new study in Science reported the first global map of Earth’s vast underground network of arbuscular mycorrhizal (AM) fungi — a “living infrastructure” that has sustained plant life for millions of years but whose scale was largely invisible until now.

• Using machine learning and data from over 16,000 soil cores, the team estimated topsoils hold around 110 quadrillion km of fungal hyphae — roughly equal to nearly a billion round-trips from Earth to the Sun.
• AM networks weigh about 300 million tonnes of carbon — four to six times the weight of the entire human population.
• By forming symbioses with about 70% of plant species (trading nutrients for carbon), they sequester an estimated 4 billion tonnes of CO₂-equivalent a year — roughly 11% of all human-related carbon emissions.
• Grassland ecosystems — such as South Sudan, the Tibetan plateau and India’s Banni grasslands — house about 40% of the world’s AM fungal networks.
• Cropland has roughly 50% lower fungal density than wild ecosystems, and grasslands are being converted to farmland four times faster than forests — putting these networks at extreme risk.

• A mycorrhiza is a symbiotic association between a fungus and plant roots.
• Arbuscular mycorrhizal (AM) fungi (phylum Glomeromycota) penetrate root cells, forming tree-like arbuscules in the root cortex where nutrient–carbon exchange happens (a type of endomycorrhiza).
• The plant supplies carbon (sugars); the fungus supplies phosphorus, nitrogen, water and micronutrients — vastly extending the root’s reach.
• These networks are central to soil carbon storage, soil structure and ecosystem productivity.

• Climate lever: protecting fungal networks could become a meaningful, low-cost pathway for carbon sequestration.
• Policy blind spot: fungi remain at the periphery of environmental policy; the map (by the Society for the Protection of Underground Networks, SPUN) aims to move them to the centre of climate action.
• Land-use threat: rapid grassland-to-cropland conversion erodes the very networks that store carbon and underpin productivity.
• India link: the Banni grasslands (Kachchh, Gujarat) — among Asia’s largest grasslands and home to Maldhari pastoralists — are flagged as a global hotspot.

Xuanzang (Hiuen Tsang), the 7th-century Chinese monk-scholar who travelled through India

India and China are in advanced discussions over a joint UNESCO nomination for ‘The Great Tang Records on the Western Regions’ (Da Tang Xiyu Ji) — the account of the 7th-century Chinese Buddhist monk-scholar Xuanzang (Hiuen Tsang) and his travels through medieval India. The proposal — led by China and supported by India — is under consideration with the Ministry of External Affairs, part of a broader BRICS push for joint heritage nominations.

• Xuanzang journeyed roughly between 629 and 645 CE; of this, he spent about 13–14 years travelling within India (the source’s “19 years” refers loosely to his time away/abroad).
• He studied at Nalanda University and chronicled the political, social and religious life of early-medieval India — including the era of Harshavardhana.
• His Records remain a primary source for reconstructing the history of the period.

• Each country may file only two dossiers per two-year cycle of UNESCO heritage lists; but there is no limit on joint nominations, led by one country and backed by others — a way to “skip the queue.”
• India is also pursuing: Panchatantra (jointly with Iran, given its place in Persian literature) and the philosophy of Satyagraha (jointly with South Africa).
• These emerged from the 2nd BRICS Culture Working Group meeting (held in Varanasi); recommendations go to the BRICS Culture Ministers’ meet in Bhopal (August).
• Precedent of overlap: in 2017, both India and China claimed Sowa-Rigpa (the Tibetan/Himalayan system of medicine) for the Intangible Cultural Heritage list — illustrating why joint, rather than competing, nominations help.

• Civilisational diplomacy: shared Buddhist and literary heritage offers a soft-power bridge between India and China amid a broader diplomatic thaw.
• Efficient safeguarding: joint dossiers let BRICS nations protect overlapping heritage faster.
• India’s cultural footprint: reinforces India as a node of trans-regional exchange (Ramayana traditions with Indonesia; Buddhist scriptures with China; Panchatantra with Iran).

Indian Air Force Antonov AN-32 tactical transport aircraft

Five Indian Air Force personnel were killed (and one rescued) when an Antonov AN-32 military transport aircraft crashed during landing at Jorhat, Assam. It is the third major AN-32 crash in a decade, renewing focus on the fleet’s ageing and modernisation. (Casualty figures are per the source report and should be confirmed.)

• A critical workhorse of the IAF, prized for moving men and material across difficult terrain.
• Played a key role during the Kargil War (1999) and Operation Parakram (2001–02), transporting personnel and cargo to border areas through multiple sorties.

• After a 2009 crash, India signed a $400-million contract with Ukraine’s Antonov to upgrade most of the IAF’s ~105 AN-32s — airframe and turboprop-engine overhaul plus new navigation and communication equipment.
• The programme stalled after Russia’s annexation of Crimea (2014); India and Ukraine later agreed to resume upgrades with Ukrainian-developed alternatives.
• About half the fleet was modernised in Ukraine; 38 aircraft were being upgraded at the IAF’s Base Repair Depot (BRD), Kanpur.

• Ageing fleet: the recurrence of crashes underscores the strategic risk of operating a four-decade-old platform in demanding terrain.
• Modernisation & replacement: completing upgrades and planning a successor (alongside inductions like the C-295 replacing the older Avro fleet) is vital for tactical airlift.
• Indigenisation: reduces dependence on a foreign OEM whose supply chain was disrupted by geopolitics (the 2014 Crimea fallout).