President Trump has turned a corner on the Russia-Ukraine war this week, announcing a deal to send weapons to Ukraine via NATO and giving Vladimir Putin an ultimatum to make peace. Charles Kupchan, senior fellow at the Council on Foreign Relations,

President Donald Trump has long worked to bring peace to Ukraine, but his recent major policy adjustments in response to Russian President Vladimir Putin’s reticence toward peace could finally present Trump’s chance to make a deal,

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

Senate Majority Leader John Thune says Republicans will vote on a Russia sanctions bill once Trump approves it, as pressure mounts on Moscow to negotiate peace in Ukraine.

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

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.

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

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:

“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.”