It remains to be seen just how lasting and severe President Donald Trump’s turn against Vladimir Putin will be. Trump has criticized the Russian president in unprecedented terms in recent days and signaled he’ll send vital weapons to Ukraine.

Trump said he would end the war in Ukraine within his first 24 hours in office. His patience with Russia's Putin now appears to be wearing thin.

“Putin will not negotiate as a loser,” one of his longtime associates tells TIME by phone from Moscow. “He knows that winners don’t get punished, and if he wins, all of this” — the sanctions, the tariffs — “will go away.”

President Donald Trump issues Russian President Vladimir Putin a 50-day deadline to end Ukraine war or face 100% tariffs, prompting skepticism from the EU's chief diplomat and Kyiv's mayor over 50-day timeframe.

Melania Trump has highlighted Russia's continued attacks on Ukraine in private conversations, President Trump said on Monday.

U.S. President Donald Trump repeatedly said during his campaign he would be able to end the war between Russia and Ukraine “in 24 hours” upon taking office.

President Trump threatens Putin with 100% tariffs if no Ukraine peace deal is reached within 50 days, while confirming arms sales to NATO to support Ukrainian resistance.

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: