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.

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,

Is US First Lady Melania Trump a secret agent who turned Donald Trump against Russian President Vladimir Putin? Yes, if social media is to be believed. Melania became a hero for Ukrainians and became the subject of "Agent Melania Trumpenko" memes after Trump credited her with questioning Putin's actions.

As Ukrainian firefighters battle the aftermath of another Russian strike, President Donald Trump says he hasn’t spoken to President Vladimir Putin about the fighting. “He says he wants peace. He does.

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

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:

Russia’s approach is to ‘keep calm and carry on’ in the face of Trump’s threats over Ukraine war, experts say.

The US president spoke to reporters on the White House South Lawn on Tuesday afternoon, the day after he threatened to impose "secondary tariffs" on Moscow

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