Democrats' midterm sweep rattles Iran, Ukraine, trade and AI markets

Democrats didn't just win a midterm — they grabbed the steering wheel of Congress, and the rest of the world is already bracing for the swerve. Trade partners, allies and adversaries are all reading the results for signs of where Washington goes next. From the Strait of Hormuz to Beijing's trade table, the ripple effects landed fast.

Start with Iran. Voters made clear they're sick of an eight-month conflict that has helped push fuel prices painfully higher, and two sources familiar with Gulf government thinking told Reuters that Trump now has more reason than ever to chase a peace deal — with another full-scale assault looking less likely. But Tehran could read the drubbing as weakness instead of opportunity. Ebtesam al-Ketbi of the Emirates Policy Center said a real chance to end the war could open if Iran recognizes Trump needs a deal, though misreading the vote could just as easily invite fresh military escalation. Markets are leaning toward peace: oil slid for a third straight day as traders bet on revived US-Iran talks, though thin stockpiles kept the selloff from going deeper. Saxo Bank analyst Ole Hansen said the market increasingly looks like it's wagering that Trump wants the Middle East war behind him.

Israel is watching Congress too. A Democrat-run House and Senate could crank up scrutiny of Israeli military operations in Iran, Gaza and Lebanon — putting long-standing US military aid and weapons sales on shakier ground. Rivals angling to unseat Prime Minister Benjamin Netanyahu pounced on the Democratic wins, blaming him for eroding bipartisan American support as they jockey to build a coalition after last week's inconclusive Israeli election.

For Ukraine, the shift is more hope than help — at least for now. Trump has largely cut off direct US financial and military aid, and riled lawmakers in both parties by lifting sanctions on Russian diesel and waiving Russian energy sanctions just weeks after signing them into law. Democrats can now push a new aid package that would survive a Trump veto with a two-thirds majority, but it won't arrive quickly and won't fix Kyiv's most urgent gap: Patriot air defence interceptors to shield cities and energy infrastructure this winter. Rep. Gregory Meeks of New York, a candidate to lead the House Foreign Affairs Committee, has introduced bipartisan legislation to block Trump's plan to return Russian diesel to global markets, while the Kremlin said it hopes the results won't dent what it calls Trump's peacemaking efforts.

Trade is the next domino. Analysts say Asian economies may slow-walk investment pledges they made to dodge tariffs, handing China a perceived edge in ongoing talks — though the Economist Intelligence Unit's Chim Lee expects US-China ties to hold in a state of fragile stability. India, long stalled in its own US trade negotiations over protecting farmers, could catch a break: former Indian trade secretary Anup Wadhawan said Trump's ability to impose arbitrary tariffs will face a real challenge now that Congress holds the purse strings. Lawmakers control commerce and import duties, but Trump has leaned on national security and unfair-trade laws to impose tariffs anyway — and Democratic attempts to curb that power would likely hit a veto.

Then there's AI. Exit polls showed voter anxiety over the aggressive buildout of AI data centres, and that spooked shares of major Asian chipmakers, which fell Wednesday. US data centre operators also slipped in pre-market trade. Longbow Asset Management CEO Jake Dollarhide said a Democratic sweep would pressure tech, potentially dragging regulation into everything AI and slowing the wild growth figures investors have come to take for granted.