WASHINGTON/NEW DELHI: US President Donald Trump on Friday signed into law the Lindsey O. Graham Sanctioning Russia and Iran Act of 2026, two days after the House of Representatives cleared the measure 262–159. The statute arms the White House with authority to levy tariffs of up to 100 per cent on imports from the five largest purchasers of Russian crude oil and natural gas — a list that currently includes India — and to tighten the squeeze on Moscow’s energy revenues funding the war in Ukraine.
The law does not automatically slam 100 per cent duties on New Delhi or Beijing. It gives the President wide discretion over who is targeted, at what rate, and whether national-security waivers apply. Implementation is expected within 30 days of enactment, with the administration required to identify the top five buyers over the preceding 12 months and those facilitating Russia’s so-called shadow tanker fleet.
That uncertainty is precisely what markets fear.
Equity desks in Mumbai, Shanghai and New York spent Friday and Saturday modelling two scenarios: a limited, negotiated application of the tariff tool as leverage in trade talks, and a maximalist use that treats energy purchases as grounds for a second-round tariff war. India remains the second-largest buyer of Russian crude after China — recent tracking put Indian offtake near 1.6 million barrels a day at peaks this year — and has no European-style exemption tied to gas-share thresholds. A 100 per cent levy on Indian goods entering the United States would hit pharmaceuticals, gems and jewellery, engineering products, textiles and IT-adjacent exports that already operate on thin margins.
The transmission to stock markets would be swift. Indian benchmark indices are sensitive to US tariff headlines; previous rounds of duty threats have triggered sharp sell-offs in export-heavy sectors, a weaker rupee, and higher hedging costs. Refiners that have built crude slates around discounted Russian barrels would face a dual hit: the political cost of continuing purchases and the commercial cost of switching to costlier Middle Eastern or Atlantic Basin grades. Higher feedstock prices feed into inflation prints, which in turn keep the Reserve Bank of India cautious on rate cuts — a combination that compresses valuations in banks, autos and consumer names.
Energy and shipping stocks would be first movers. Any credible threat to reroute Russian barrels raises freight rates, insurance premia and the risk premium on oil itself. Global crude already carries a geopolitical surcharge from conflict and sanctions; a US decision that forces India and China to bid more aggressively for non-Russian barrels would lift Brent and, with it, input costs for airlines, chemicals and paint companies listed across Asia. US markets would not be insulated. Multinationals with large India and China supply chains would reprice earnings, while Treasury yields could twitch if investors treat the law as another chapter in unpredictable tariff policy rather than a narrow Russia instrument.
There is a second-order risk. The Act also extends Iran-related sanctions for five years and authorises steep duties on goods from Russia itself. Combined with existing US tariff architecture, that thickens the fog around global trade rules. Portfolio managers dislike fog. When the probability of a 100 per cent duty on a major trading partner cannot be priced cleanly, risk premia rise, foreign portfolio flows slow, and domestic institutions rotate toward cash and gold.
None of this is destiny. The White House retains waiver power, and Trump has used tariff threats as bargaining chips before. A calibrated approach — pressure on volumes without a blanket tariff — would limit damage. But the statute is now law, the clock on identification of the top five buyers has started, and markets will trade the option, not the hope. For Indian equities, the next 30 days are less about whether Russia is sanctioned than about whether New Delhi’s oil bill becomes America’s next tariff target.