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The Daily Brief · 18 October 2026

UPSC current affairs, 18 October 2026

10 stories across 4 GS papers, filtered for the exam — why each is in the news and how to use it in Mains.

By Shivam Singh

Read the full brief (PDF) with data, a Prelims MCQ and a Mains question for every story

GS Paper 1: Modern Indian History

UPSC's GS Paper 1 questions since 2016 → GS Paper 1 syllabus →

Teja Singh Samundri at 100: The Gurdwara Reform Movement

Why in news: The centenary of Teja Singh Samundri's death in Lahore Central Jail (1926) is being marked this year; he was a key organiser of the Gurdwara Reform (Akali) Movement and helped found the SGPC.

For Mains: Use in GS1 (freedom struggle, regional movements, socio-religious reform) answers on how religious reform fed mass nationalism. Answer skeleton INTRO The Akali Movement (1920-25) was a mass, non-violent struggle to free gurdwaras from mahant control.

GS Paper 2: Polity, Governance & IR

UPSC's GS Paper 2 questions since 2016 → GS Paper 2 syllabus →

Children Have a Fundamental Right to Access the Internet: SC

Why in news: A Bench of Justices J.B. Pardiwala and Vinod K. Chandran held that children, like all individuals, have a fundamental right to access and use the Internet under Article 21 read with Article 19(1)(a).

For Mains: Use in GS2 (fundamental rights, vulnerable sections, role of the judiciary) and GS3 (cyber security) answers on children's online safety. Answer skeleton INTRO The SC has held that children have a fundamental right to access the Internet under Arts 21 and 19(1)(a).

Can an OCI Cardholder Be Told to Leave India?

Why in news: Actor Imran Khan, a U.S. citizen with an OCI card, moved the Bombay HC against a 'leave India' notice issued after he joined a protest; the FRRO has now also asked why his OCI card should not be cancelled.

For Mains: Use in GS2 (citizenship, fundamental rights of non-citizens, diaspora) answers on balancing sovereignty with due process. Answer skeleton INTRO OCI cardholders are foreign nationals; Art 19 freedoms belong only to citizens, but Arts 14 and 21 protect everyone. BODY Sovereign power over foreigners; limits of Art 19; due process under Arts 14 and 21; OCI privileges vs restrictions; precedent of 2020; diaspora relations.

Ladakh: The Centre's Two-Stage Plan and Article 240

Why in news: Ladakh's Chief Secretary called for dialogue on an MHA proposal that the Leh Apex Body and Kargil Democratic Alliance rejected within two hours, calling it a 'significant departure' from earlier assurances.

For Mains: Use in GS2 (federalism, special provisions, UT governance) and GS3 (border areas) answers on Ladakh's constitutional future. Answer skeleton INTRO Six years after becoming a UT without a legislature, Ladakh seeks democratic and constitutional safeguards.

Trump Waives Russian-Oil Sanctions: Relief for India

Why in news: President Trump waived key provisions of a new U.S. law authorising tariffs of up to 100% on countries buying Russian oil, easing pressure on Indian refiners ahead of Secretary of State Rubio's 20-22 October visit.

For Mains: Use in GS2 (India-U.S. relations, effect of policies of developed countries on India) and GS3 (energy security) answers. Answer skeleton INTRO The waiver shows how U.S. sanctions policy now swings with its own energy and diplomatic needs. BODY India's energy security and discounted crude; secondary-sanctions risk; trade-deal leverage; the diesel deal's inconsistency; Russia-Ukraine dynamics; strategic autonomy.

GS Paper 3: Economy, Health, Space & Environment

UPSC's GS Paper 3 questions since 2016 → GS Paper 3 syllabus →

FSSAI Moves to Ban Added Sugar in Infant Food, Sets Tea Pesticide Limits

Why in news: FSSAI published two draft amendments in the Gazette: one bans adding sucrose and fructose to foods for infants up to six months; the other sets maximum residue limits for two pesticides in tea.

For Mains: Use in GS3 (food processing, food safety, agriculture) and GS2 (health, nutrition) answers. Answer skeleton INTRO FSSAI's twin drafts tackle added sugar in infant food and regulatory gaps for tea pesticides. BODY Child nutrition and NCD prevention; industry reformulation; labelling; tea exports and MRL harmonisation; farmer certainty; enforcement capacity and testing labs.

Trade Margins Capped on 137 Cancer Drugs

Why in news: The NPPA capped trade margins at 30% on 137 non-scheduled anti-cancer formulations, which could cut their retail prices by up to 70%, effective 9 November.

For Mains: Use in GS2 (health, affordable medicines) and GS3 (pharma sector, regulation) answers. Answer skeleton INTRO Capping trade margins on 137 cancer drugs targets mark-ups rather than manufacturers' prices.

Aditya-L1 and Proba-3: First Joint View of Solar Eruptions

Why in news: Scientists led by the Indian Institute of Astrophysics combined coronagraph data from India's Aditya-L1 and Europe's Proba-3 to study coronal mass ejections near the Sun, in a paper in Astronomy & Astrophysics.

For Mains: Use in GS3 (space technology, international cooperation, disaster preparedness) answers on space weather. Answer skeleton INTRO Joint Aditya-L1 and Proba-3 observations give the first combined view of CMEs near their source.

Saving India's Only Ape: Canopy Bridges for the Hoolock Gibbon

Why in news: Fragmentation by roads and railways is the main reason Northeast India's hoolock gibbon populations have fallen by about 90% in recent decades; canopy bridges are one answer.

For Mains: Use in GS3 (conservation, environmental impact assessment, infrastructure) answers on green infrastructure. Answer skeleton INTRO Hoolock gibbons show how linear infrastructure can push an arboreal species towards local extinction. BODY Ecology of arboreal species; fragmentation effects; Hollongapar case; mitigation tools; role of communities and NGOs; EIA and NBWL clearances.

GS Paper 4: Ethics, Integrity & Aptitude

UPSC's GS Paper 4 questions since 2016 → GS Paper 4 syllabus →

Gifts, Favours and Conflict of Interest in Public Office

Why in news: Kimberly Guilfoyle resigned as U.S. Ambassador to Greece after a Wall Street Journal investigation alleged she traded favours and accepted gifts; she has called the allegations 'false'.

For Mains: Use in GS4 (probity in governance, integrity, codes of conduct) answers and case studies. Answer skeleton INTRO Accepting favours creates obligations that can bend public decisions.

Prelims pointers — today in one line each

  1. Veer Bal Diwas (26 December) — marks the martyrdom of Sahibzadas Zorawar Singh and Fateh Singh, the younger sons of Guru Gobind Singh, the tenth Sikh Guru.
  2. Asian Para Games, Nagoya — Manasi Joshi and Thulasimathi Murugesan assured India a medal in women's doubles SL3-SU5 badminton for the second successive edition, at the Games in Nagoya, Japan.
  3. AgingHallmarksDB — free database built by researchers in Chennai and Mumbai that brings together 3,111 genes linked to 11 core biological processes of ageing.
  4. MonoRace — AI system that flies a racing drone with one camera and a basic motion sensor; it beat three human world champions at the 2025 Abu Dhabi Autonomous Drone Racing Competition.
  5. Elephant carcasses — a Kruger National Park study found they first create a biodiversity 'coldspot' and then a grazing 'hotspot' of nutrient-rich leaves, with effects lasting over seven years.
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