Unilateral sanctions increasingly constrain India's strategic autonomy. Examine with reference to India–Iran relations.

Unilateral sanctions are imposed by a single state without the UN Security Council. They do not bind other countries under international law. They still reach third countries because those countries' banks, insurers and airlines depend on the U.S. dollar and U.S. markets. India–Iran ties show these sanctions narrowing India's choices, from trade to connectivity and now humanitarian aid.

How sanctions constrain India

• Humanitarian trade: In October 2026, India refused Iran Air permission to fly medicines to Tehran. It cited the risk of U.S. secondary sanctions on Indian airports and air operators. Iran argued that humanitarian aid falls under no international sanction [1].
• Over-compliance: UN Special Rapporteur Alena Douhan found that even exempt medicines are hard to buy and deliver, because banks and firms adopt "excessive de-risking" [2]. The Armenia transit route India offered spoiled temperature-sensitive medicines [1].
• Strategic connectivity: The U.S. revoked India's 2018 Chabahar waiver with effect from 29 September 2025. This put at risk nearly USD 120 million that India had invested in port equipment [3].
• Diplomatic cost: Iran's Speaker skipped the BRICS Parliamentary Forum that India is hosting on 26–27 October 2026. This weakens India's claim to speak for the Global South [1].

Limits to the constraint: India's remaining room to act

• Negotiated relief: After India made representations, the U.S. Treasury wrote on 28 October 2025 that Chabahar would not face sanctions until 26 April 2026 [3].
• Alternatives, not refusal: India did not deny the aid itself. It offered delivery through a third country [1].
• Independent multilateral stance: India was the only abstention on UNSC Resolution 2664 (14–0–1), citing the risk that terrorists could misuse humanitarian carve-outs [4]. This shows independent judgment, but it also weakens Iran's case that India should support blanket exemptions.
• Strategic autonomy therefore survives as room to bargain, not freedom from pressure.

Way forward

• The MEA should seek case-specific U.S. assurances for named medicine flights, as it did for Chabahar [3].
• Any third-country route India offers should have cold-chain handling at every transfer point [1].
• India should use BRICS and the UN to push norms against over-compliance [2], extending the Resolution 2664 approach to medicines with anti-terror safeguards [4].

Unilateral sanctions have steadily narrowed India's options with Iran, from port investment to medicine flights. Through case-by-case diplomacy and rule-making in multilateral forums, India can turn this constraint into calibrated engagement. That would keep its strategic autonomy real and uphold SDG 3's goal of health for all.