Anantam IASPost · 17 April 2026

India-Iran Relations (UPSC International Relations)

Study Notes · General Studies · GS II · International Relations

India-Iran relations for UPSC GS II: Chabahar port, INSTC, oil sanctions, Farzad-B gas field, and balancing Tehran against Israel and US ties.

India and Iran share a 2,500-year civilisational relationship — Persian was the court language of Mughal India, and modern Iran sits on India’s extended neighbourhood, providing the only overland access to Afghanistan and Central Asia that bypasses Pakistan. The relationship is shaped by a triangle of pressures: US sanctions, Iran-Israel tensions, and Iran’s deepening ties with China and Russia. In May 2024, India signed a 10-year agreement to operate the Chabahar port — a signal that strategic autonomy survives sanctions pressure. For UPSC GS II, India-Iran tests connectivity diplomacy and strategic autonomy.

Historical context

Formal diplomatic ties began in 1950. Cold War-era Iran under the Shah had pro-US, anti-USSR orientation; India-Iran ties stayed cordial. The 1979 Islamic Revolution initially complicated relations, but the two countries developed a functional cooperation through the 1990s. Iran was India's second-largest oil supplier in 2009-10; this dropped to under 1% share after 2020 due to US sanctions following the Trump administration's 2018 withdrawal from the JCPOA.

Importance of Iran for India

India-Iran — diagram from the Anantam IAS Mains QIP handout
India-Iran

Chabahar port

The Shahid Beheshti terminal at Chabahar on Iran's Makran coast, outside the Strait of Hormuz, is India's flagship Iran investment.

MilestoneYear
Tripartite MoU (India-Iran-Afghanistan)2016
First operational phase; India Ports Global Limited (IPGL)2018
US sanctions exemption for Chabahar2018-24
10-year agreement — IPGL operates Shahid BeheshtiMay 2024
USD 120 million investment + USD 250 million credit line2024

Strategic value

US sanctions posture

The US historically granted Chabahar a national security exemption from CAATSA. In 2024, with the new 10-year deal, Washington signalled possible sanctions — an issue New Delhi is managing through sustained diplomacy.

Areas of cooperation

Oil and gas

Trade

Connectivity

Diplomatic engagement

Regional cooperation

Challenges

Geopolitical pressure

Regional rivalries

China factor

Iran's political positions

Farzad-B setback

Despite OVL's discovery work, Iran awarded the development contract to a domestic firm.

Project implementation

India has a poor track record on rapid project delivery in Iran — Chabahar expansion, Zahedan rail.

Latest developments (2024-26)

Way forward

  1. Operate Chabahar at volume — logistics, storage, India-Central Asia cargo flows.
  2. Manage US sanctions risk — maintain exemptions via diplomatic engagement.
  3. Revive gas cooperation where possible; explore LNG.
  4. Use Chabahar-INSTC as complement to IMEC.
  5. Balance Iran with Israel, Saudi, UAE — no choosing sides.
  6. People-to-people — cultural diplomacy, education scholarships.
  7. Track the Pezeshkian reformist opening — support openings where feasible.

Bilateral trade snapshot

YearIndia-Iran trade (USD bn)Note
2018-1917.03Pre-sanctions peak
2019-204.77Sharp drop after US sanctions
2020-212.11COVID + sanctions
2021-221.9Low baseline
2022-232.33Slight recovery
2023-242.5Chabahar stimulus

Iran's external alignments

JCPOA and the nuclear file

The Joint Comprehensive Plan of Action (2015) — between Iran, P5+1 (US, UK, France, Russia, China, Germany) — limited Iran's nuclear programme in exchange for sanctions relief. Trump withdrew the US in 2018; Iran progressively reduced compliance. Iran's enrichment reached 83% purity in 2023 — near weapons-grade. Revival talks have stalled; Pezeshkian's government has signalled willingness.

For India, the JCPOA matters because:

India's Shia community

India has approximately 20-30 million Shia Muslims, one of the largest populations globally. Ayatollah Khamenei's comments on Indian Muslims (particularly after the 2020 Delhi riots and the 2024 statement) have been diplomatic irritants. India's response: firm pushback on internal affairs, separated from bilateral cooperation.

Chabahar in operational terms

Iran's regional proxy network

Iran leads the Axis of Resistance:

This network directly affects India's Red Sea shipping, Gulf diaspora, and oil imports. Managing Iran means engaging Tehran while maintaining ties with Saudi Arabia, UAE, and Israel.

2024-25 regional escalations

UPSC Relevance

India-Iran is tested in GS II — bilateral relations, effect of policies of developed countries. Prelims has asked about Chabahar, INSTC, JCPOA. Mains prompts rotate between sanctions navigation, Chabahar, and strategic autonomy.

Practice question (Mains): "India-Iran relations are shaped by geography but constrained by sanctions." Examine the Chabahar port agreement of 2024 in this context. (250 words)