# US Treasury Secretary Bessent Threatens Secondary Sanctions on Nations, Firms Doing Business with Iran; Flags China, India as Major Oil Buyers

*US expands Iran sanctions threat to secondary penalties on third countries and entities, naming major Asian buyers amid stalled Hormuz talks.*

**Economy · 23 Aug 2026 · GS: GS2, GS3 · Exam yield: High**

## Why this matters

UPSC frequently tests US unilateral sanctions, their impact on India’s energy security, and multilateral trade norms. This story links current West Asian geopolitics, dollar dominance, and India’s strategic autonomy. It is relevant for GS2 (international relations) and GS3 (economy) answer writing.

## In plain words

The US has imposed sanctions on Iran since the 1979 Islamic Revolution, but its latest move escalates this sharply: it will now punish *third countries and companies* that trade with Iran, not just Iranian entities. This is called secondary sanctions, part of the ongoing "Operation Economic Fury" campaign announced earlier this year.

Treasury Secretary Scott Bessent confirmed penalties will target oil trade, banking, or seaborne transfers with Iran. China (buying >80% of Iran’s 2025 shipped oil per Kpler) and India (past major buyer, halted oil imports in 2019) are flagged as potential targets. The US can block access to dollar clearing systems even for entities with no US ties, as most global trade uses the US dollar.

This works like a popular social media app banning any user who interacts with a suspended account: the app has no control over the suspended account, but can punish its users. Iran has evaded past sanctions via shadow tankers, but experts say the new measures’ success depends on target countries’ willingness to comply to avoid losing US market access.

## Key facts

- Treasury Secretary Scott Bessent threatened secondary sanctions on entities conducting business with Iran under 'Operation Economic Fury'
- China and India are identified as major buyers of Iranian oil, potential targets of the new penalties
- Secondary sanctions would penalize transactions with Iran even without direct US jurisdictional nexus
- Move escalates US pressure on Iran as peace talks sputter and Hormuz shipping remains restricted

## How we got here

The US has maintained economic sanctions on Iran since the 1979 Islamic Revolution, tightening them repeatedly. The 2015 Joint Comprehensive Plan of Action (JCPOA) eased some restrictions, but the Trump administration withdrew from the deal in 2018, reimposing "maximum pressure" sanctions. The Biden administration retained most of these measures. The current nearly six-month-old conflict in West Asia saw two short-lived ceasefires (April and June 2026) collapse, with Iran briefly closing the Strait of Hormuz, which carries ~20% of global traded oil. The US reimposed a naval blockade on Iranian ports on July 13, 2026, under "Operation Economic Fury", initially targeting only Iranian financial flows and port activity. India halted all Iranian oil imports in 2019 after US sanctions, while China has remained the largest buyer, purchasing over 80% of Iran’s shipped oil in 2025 via unlisted shadow fleets.

## The bigger picture

**International — US Unilateral Sanctions vs Multilateral Trade Norms**

The US is imposing secondary sanctions without UN Security Council authorisation, which legal experts note violates multilateral trade governance norms. Only the UNSC can mandate global trade embargoes; the US is leveraging its dollar dominance to coerce third countries into compliance. China has publicly objected to the measures, calling sanctions "unhelpful" and urging diplomatic resolution, while the UAE announced an indefinite trade embargo on Iran in August 2026.

→ US unilateral secondary sanctions lack UN backing, relying on dollar hegemony to bypass multilateral trade rules.

**Economic — Impact on Global Energy Markets and Dollar Dominance**

Iran’s crude exports fell to below 300,000 barrels per day (bpd) in May 2026, down from 1.3-1.5 million bpd pre-war, under the US naval blockade. Oil prices rose to a three-week high in August 2026 after the sanctions threat, as markets fear further supply shocks. The US is using access to dollar clearing systems as leverage, as most global energy trade is denominated in USD, making it hard for target countries to bypass penalties.

→ Secondary sanctions leverage dollar dominance to disrupt Iranian oil exports, creating global energy price volatility.

**Political — Strategic Autonomy Challenges for India**

India halted Iranian oil imports in 2019 but maintains ~$1.6bn in annual bilateral trade with Iran (2025 data, India’s commerce ministry), including basmati rice and pharmaceutical exports. The new sanctions threaten this trade, forcing India to balance ties with the US (its major trade partner) and Iran (key to its West Asia connectivity projects like Chabahar Port).

→ India faces pressure to cut residual trade with Iran, testing its strategic autonomy in foreign policy.

## The big debate

**Can the US successfully enforce secondary sanctions on major economies like China to cut off Iran’s trade lifelines?**

**For**
- US control over dollar clearing systems lets it block non-US entities from global financial markets.
- Past maximum pressure sanctions cut Iranian oil exports to near-zero levels before the current conflict.
- China relies on US markets for rare earth mineral exports, giving the US bargaining power.

**Against**
- Iran has evaded sanctions for decades using shadow fleets and unlisted commercial fronts.
- UN authorisation is required for global embargoes, limiting US legal legitimacy.
- Major economies like China are developing alternative non-dollar payment systems to bypass US financial leverage.

**The balanced take:** Secondary sanctions’ efficacy depends on target countries’ willingness to forego US market access. While dollar dominance gives the US initial leverage, alternative financial systems and Iran’s evasion tactics limit long-term success.

## Answer it in Mains

**Critically examine the challenges posed by US unilateral secondary sanctions to India’s strategic autonomy in West Asia.** *(GS2)*

How to attack it: Intro: Define secondary sanctions. Body: Impact on India-Iran trade, Chabahar Port, US-India ties. Conclusion: Need for multilateral norms and alternative financial systems.

Quote this: 2025 India commerce ministry data on India-Iran bilateral trade ($1.6bn), UN Charter Article 41

**How does the US dollar’s dominance in global finance enable unilateral economic sanctions? Discuss with reference to US measures against Iran.** *(GS3)*

How to attack it: Intro: Dollar dominance in trade. Body: Mechanism of secondary sanctions, impact on Iranian oil exports, global energy prices. Conclusion: Need for diversified payment systems.

Quote this: Kpler 2025 data on China’s 80% share of Iranian oil, BBC report on Operation Economic Fury

## Prelims quick-fire

- **[International]** US Treasury Secretary Scott Bessent announced secondary sanctions under 'Operation Economic Fury' in August 2026, targeting entities trading with Iran. — *Operation Economic Fury is a US campaign, not a UN initiative.*
- **[Data]** China bought over 80% of Iran’s shipped oil in 2025, per analytics firm Kpler, mostly via shadow fleets. — *Shadow fleets switch off tracking devices to evade sanctions.*
- **[Data]** India halted Iranian oil imports in 2019 after US sanctions; bilateral trade stood at ~$1.6bn in 2025. — *India’s trade with Iran includes basmati rice and pharmaceutical exports.*
- **[Geography]** Strait of Hormuz carries ~20% of global traded oil; Iran closed it briefly during the 2026 West Asia conflict. — *Hormuz is a strategic chokepoint between Gulf of Oman and Persian Gulf.*
- **[Term]** Secondary sanctions penalise non-US entities for trading with a sanctioned country, even without US jurisdictional nexus. — *Relies on US control over dollar-denominated global financial systems.*
- **[International]** UAE imposed an indefinite trade embargo on Iran in August 2026, per Al Jazeera reporting. — *UAE is a major re-exporter of Iranian goods, so embargo will hit Iran hard.*

## What should happen

1. **Operationalise India’s Rupee-Rial payment mechanism for non-oil trade with Iran** Reduces exposure to US dollar clearing systems for legitimate bilateral trade.
2. **Advocate for UN Security Council-mandated sanctions on Iran instead of unilateral US measures** Upholds multilateral trade norms and prevents coercive secondary sanctions on third countries. *(UN Charter Article 41)*
3. **Diversify crude oil import sources to cushion supply shocks from Iranian export curbs** Limits inflationary pressure from global oil price spikes triggered by US sanctions. *(IEA 2025 World Energy Outlook)*

## Jargon, demystified

- **Secondary sanctions** — Penalties imposed on non-US entities for trading with a US-sanctioned country, even without direct US jurisdictional links. *(Key term for IR and economy questions on US sanctions.)*
- **Operation Economic Fury** — US 2026 campaign combining Treasury sanctions on Iranian financial flows and naval blockades of Iranian ports. *(Name of current US sanctions campaign on Iran, often in news.)*
- **Shadow fleets (Shadow vessels)** — Ships that disable tracking devices and use false flags to transport sanctioned goods like Iranian oil. *(Iran uses these to evade US oil export sanctions.)*
- **Dollar clearing systems** — Networks for processing USD-denominated international transactions, controlled largely by US financial institutions. *(US leverages these to enforce secondary sanctions globally.)*
- **JCPOA (Joint Comprehensive Plan of Action)** — 2015 agreement between Iran and world powers to limit Iran’s nuclear program in exchange for sanctions relief. *(US withdrew from JCPOA in 2018, reimposing sanctions.)*
- **UNSC (United Nations Security Council)** — UN body with primary responsibility for maintaining international peace and security, can mandate global sanctions. *(Only UNSC can authorise multilateral trade embargoes, per UN Charter.)*
- **Rupee-Rial payment mechanism** — Bilateral system to settle India-Iran trade in local currencies, bypassing US dollar systems. *(India uses this for non-oil trade with Iran to avoid US sanctions.)*

## Revise in 30 seconds

- US secondary sanctions target third countries trading with Iran, under 'Operation Economic Fury'.
- China buys 80% of Iran’s 2025 oil; India halted Iranian oil imports in 2019.
- Strait of Hormuz carries 20% of global oil; Iran closed it briefly in 2026.
- UNSC authorisation is required for global embargoes, not unilateral US sanctions.
- India’s 2025 bilateral trade with Iran was ~$1.6bn, per commerce ministry data.

## Study next

**Static links:** GS2: International Relations - Bilateral Relations, GS3: Economy - Global Financial Architecture, GS3: Energy Security

**Essay angle:** The Cost of Unilateral Sanctions: Balancing National Interest and Global Norms

**Interview probe:** How should India respond to US secondary sanctions on Iran without hurting its ties with the US?

## Sources

- [Trump warns Iran of 'economic D-Day,' but it's used to sanctions](https://apnews.com/article/iran-war-trump-sanctions-economic-fury-oil-d28206ea288a3d4a9b82260ab44ce460)

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