On Monday, Trump said that Russia's failure to reach a negotiated settlement with Ukraine within 50 days would lead to his administration imposing a 100% tariff rate on Russian imports as well as what he called "secondary tariffs" on countries that have continued to do business with Moscow.

Donald Trump on Monday threatened to impose "severe tariffs" on Russia unless a peace deal was reached with Ukraine within 50 days.

New developments Tuesday reinforced the idea that President Donald Trump has significantly shifted his view of the Ukraine war.

Russian President Vladimir Putin has sacrificed an estimated 1 million of his soldiers, killed and wounded, in a three-year campaign to crush Ukraine.

Donald Trump has remarked that it will be 'too bad' if Vladimir Putin refuses to agree to a ceasefire in Ukraine. Speaking to the press on the White House South Lawn on Tuesday, following his threat of imposing "secondary tariffs" of up to 100% on Moscow if they don't strike a deal within the next 50 days,

President Donald Trump announced this week that the U.S. will send Patriot air-defense missiles to Ukraine and threatened new tariffs on Russia. Will Vladimir Putin back down? What should Trump's next move be? And what does the future hold for Ukraine? Newsweek contributors Daniel R. DePetris and Dan Perry debate:

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

Trump tells the that he trusts "almost no-one" in a wide-ranging phone call on the war in Ukraine, Nato and the UK.