Ukrainian President Volodymyr Zelenskiy also held talks with a U.S. envoy on Monday on increasing weapons production and arms purchases.

Though endlessly critical of his predecessor, President Trump has adopted a Ukraine strategy similar to that of former President Joe Biden: Arm the

President Donald Trump is anticipated to meet with NATO chief Mark Rutte, make a "major" announcement on Russia, and join an AI and energy summit during his 26th week in office.

The bombardment came after the US president gave a 50-day deadline for a Ukraine peace settlement or face sanctions.

The latest advances come after U.S. President Donald Trump set Moscow a 50-day deadline to make peace, or he would introduce deeper sanctions against the Russian economy, including a punitive secondary tariff on its trading partners.

Pentagon officials said details were still being worked out, and experts doubted Mr. Trump’s threat of huge tariffs for Russian trading partners.

"We are coping, and I have no doubt that we will cope," said Russia's foreign minister, Sergey Lavrov.

During his campaign, Trump said bringing a quick end to the war was a top priority and that helping Ukraine was a waste of US taxpayer money.