Iran Declares Economic War — Chabahar Sits at the Crossfire

When Iranian President Masoud Pezeshkian told judicial officials in Tehran that his country is engaged in a 'full-scale war' with the United States, he was careful to locate the battlefield. Not missiles, not proxies — the economy and the livelihoods of the people. That framing is precise. What changes now is that Tehran has officially named it, and the naming carries consequences that travel beyond the Persian Gulf.

For India, Pezeshkian's declaration arrives at a moment of unusual exposure. The 10-year Chabahar port agreement signed in May 2024 represents the most substantive India-Iran commitment in a generation. The International North-South Transport Corridor — the multimodal trade route threading through Iranian territory toward Central Asia and eventually Russia — depends on Iranian infrastructure partners remaining commercially viable. Both assets now sit inside a conflict Tehran has chosen to define in maximalist terms.

The Economy as a Weapon, and Who Gets Caught in the Blast

Pezeshkian's 'full-scale war' language signals that Tehran has given up on near-term sanctions relief and is recalibrating its economic posture toward endurance, workarounds, and partners willing to engage on non-dollar terms. India has historically been one of the largest buyers of Iranian crude, a relationship that Washington's secondary sanctions severed after 2019. That rupture cost Iran a reliable revenue stream and cost India a source of competitively priced oil with favourable payment terms. Neither side has fully replaced what was lost.

The danger now is not a return to that 2019 cliff edge — it is something more gradual. As Tehran digs into economic siege mode, the Iranian institutions and port authorities that India's Chabahar investment depends on face fresh liquidity stress. Infrastructure maintenance slows. Bilateral payment mechanisms, already operating under the shadow of dollar-system chokepoints, become harder to sustain. The port does not need to be sanctioned directly for its operational environment to deteriorate.

Chabahar: Asset, Liability, or Both?

India operationalised Chabahar under a partial US sanctions waiver — a recognition that the port serves connectivity purposes Washington nominally supports: access to Afghanistan, a counter to Chinese infrastructure dominance in the region, and a trade corridor that bypasses Pakistan. That waiver is the single most important diplomatic instrument India holds in this triangle.

The strategic case for Chabahar rests on two arguments. First, the port gives India a land-access route to Afghanistan and Central Asia that does not pass through Pakistani territory — a structural geographic advantage that no other corridor replicates. Second, Chabahar represents Indian-built infrastructure at a moment when Washington is focused on countering Chinese port investments across the Indo-Pacific. The China Maritime Silk Road runs through Gwadar, barely a hundred kilometres from Chabahar. That proximity is not incidental — it is the argument India should be pressing in every conversation with Washington about sanctions architecture.

Analysts at the Observer Research Foundation have argued that India must treat Chabahar as a non-negotiable strategic asset, ring-fenced from the broader oscillations of Iran-US relations. The logic is sound. But ring-fencing requires proactive diplomacy, not quiet compliance. India holds the waiver. The waiver needs to be expanded, formalised, and made resilient to policy shifts in Washington — and the window to do that runs through the current period of US strategic anxiety about China's infrastructure diplomacy, not after it closes.

The Dollar Trap and the Rupee-Rial Question

There is a structural constraint that no amount of political will fully dissolves. India's financial system operates within dollar-denominated networks. Correspondent banking relationships, SWIFT exposure, trade finance for Indian exporters — all of these create pressure points that Washington can activate without formally sanctioning a single Indian entity. Happymon Jacob of the Council for Strategic and Defense Research has noted that this banking chokepoint is the real ceiling on India's Iran engagement: even when the political intent exists, the plumbing does not cooperate.

This is precisely why the conversation about alternative payment mechanisms — rupee-rial settlement, bilateral barter-adjacent arrangements, or instruments anchored outside the dollar system — has moved from theoretical discussion to operational necessity. The INSTC cannot function at scale if every transaction between Indian and Iranian entities carries secondary sanctions risk. India has developed alternative payment architecture in other contexts; the question is whether the political momentum exists to accelerate a similar framework for Iran.

A weakened Iranian economy may perversely give India more negotiating leverage on Chabahar's expansion terms. A Tehran that needs the port revenue, the Indian investment, and the diplomatic cover that Indian engagement provides is more likely to accept conditions that protect Indian entities from legal exposure. India's leverage is real — it has simply been underplayed, consistently, across successive rounds of Iran-US tension.

The Concession India Has Not Yet Extracted

Former Foreign Secretary Shyam Saran has observed that India's Iran relationship is among its most poorly managed strategic assets — repeatedly subordinated to US partnership without India extracting commensurate value from Washington in return. That observation stings because it is structurally accurate. In 2019, India cut Iranian oil imports to near-zero under US sanctions pressure. The gesture was costly for India. The diplomatic dividend was modest.

The current moment offers a different architecture. Washington is not indifferent to India's role in the region — it needs Indian engagement in the Quad, in Indo-Pacific supply chains, and as a visible democratic counterweight to Chinese influence. India's INSTC and Chabahar ambitions, framed explicitly as counter-China connectivity infrastructure, are arguments that land in Washington's current strategic vocabulary. The Chabahar waiver exists precisely because this argument was made once, partially, and it worked. The task now is to make it comprehensively, in exchange for something durable — not a grace period, but a permanent exemption that survives the next change of administration.

Takshashila Institution analysts have flagged that the INSTC's viability depends directly on Iranian economic stability. If Tehran's economic war with Washington deepens and Iranian infrastructure partners degrade progressively, the corridor India has spent years building toward Central Asia becomes a route with no reliable middle stretch. That is the real strategic cost of passivity — not a dramatic confrontation with Washington, but a slow erosion of an asset India built and then failed to protect.

Pezeshkian's 'full-scale war' declaration will not change India's formal position. The MEA will continue to frame India-Iran ties around connectivity, bilateral trade, and regional stability — careful, hedged, and deliberately non-political. That posture has served short-term relationship management. What it has not produced is a durable settlement of Chabahar's legal status within US sanctions architecture, or a payment mechanism that makes the INSTC operationally viable at scale. Those are not diplomatic niceties. They are the difference between a connectivity corridor that transforms India's access to Central Asia and an expensive, underutilised port that proves critics right. The war Pezeshkian has named is economic. India's response needs to be strategic — and it needs to start with the assets India already holds.