That included a Monday joint statement from Republican Sen. Lindsey Graham and Democratic Sen. Richard Blumenthal calling Trump’s threat of ramped-up economic penalties if Russia doesn’t cut a peace deal in next 50 days “a real executive hammer to drive the parties to the negotiating table.”

Russia is brushing aside Trump's 50-day tariff ultimatum to Vladimir Putin. On Tuesday, top officials dismissed the impact of new sanctions and secondary tariffs. Russia is already swamped by sanctions, but Trump also warned of new tariffs for its oil customers.

Russia continued its nightly bombardment of Ukrainian cities overnight into Tuesday, after President Donald Trump said the U.S. would send military equipment to Kyiv.