If Democrats win the House, and possibly the Senate, a result nonpartisan analysts call plausible, they would gain the power to bring new Ukraine aid to a vote and to push back on President Donald Trump’s deals easing pressure on Russia, Reuters reports in an analysis of how US foreign policy could shift.

The stakes are concrete. Trump has largely halted direct US aid to Ukraine, which lawmakers of both parties had backed, and its current supplies run from packages passed under his predecessor.

Weeks ago, he also waived the sanctions on Russian energy that Congress had written into law and struck a deal to bring Russian diesel back to the market, angering Republicans and Democrats alike.

What a Democratic Congress could do for Ukraine

With both chambers, Democrats could put new Ukraine aid on the floor, and given the bipartisan support such aid has drawn, it could pass with the two-thirds majorities needed to override a Trump veto.

Other steps could be taken, too. Representative Gregory Meeks of New York, in line to chair the House Foreign Affairs Committee if his party wins control, has already introduced bipartisan legislation to block Trump’s plan to return Russian diesel to the global market.

Democrats are also readier than Trump’s Republicans to rein in military spending. They blocked his request for an unprecedented 67% rise in the military budget, to $1.5 trillion, in the Senate, and many say they will try to restore the foreign aid he has withheld or canceled.

The limits of a slice of power

The leverage has limits. Even with both chambers, Democrats would still face a president who can veto, and overriding him would require two-thirds of each chamber. The pattern has already been visible in Iran: Trump launched that war on 28 February without congressional approval, and when a War Powers resolution passed with a handful of Republican votes, his administration ignored it.

The US midterms could restore Ukraine’s American aid and curb Trump’s Russia deals, if Democrats win Congress

Estonia’s answer to the US-Russia diesel agreement: deals with dictators lead to hell. Prime Minister Kristen Michal wants the European Council to discuss giving Ukraine more aid so it can destroy Russia’s oil refineries, after sharply criticizing the US decision to strike a diesel deal with Russia, ERR reports.

Washington has eased sanctions on Russian diesel, a move Ukraine says funds a war that has killed more than 80 Ukrainian civilians in two days. Estonia’s answer is to go the opposite way and help Ukraine hit the source of that fuel, the refineries, harder.

"It is worth discussing in Estonia and at the European Council next week whether we can quickly contribute more to Ukraine so they can blast Russia's oil refineries to smithereens," Michal says.

He casts the US deal as a historic error. Innocent people are being killed for gas and fuel money, Michal warns, saying that the promised fuel may never arrive. For years, the US urged allies to drop Russian fuel, and Estonia did, so cutting Moscow’s revenue must continue, not reverse, he adds.

Mihkelson: Russia's strategic goals remain unchanged

Meanwhile, Marko Mihkelson, chair of the Riigikogu Foreign Affairs Committee, says that Russia's strategic objectives remain the same as they were before: to rebuild its empire, beginning with the subjugation of Ukraine, and to dismantle the Euro-Atlantic system of collective defense.

"That is why European allies still have only one way to prevent this war of aggression from spreading: to do everything possible to ensure that Russia’s strategic objectives fail and that the imperial wars launched by the Kremlin end in defeat," he says.

This clear strategic objective should also serve US interests, he continues, adding that "Russia’s long-standing ambition, pursued in concert with China and Iran, to undermine America’s global leadership is entering a decisive phase."