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.

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

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

The Kremlin said on Tuesday that U.S. President Donald Trump's recent statements, including a threat of sanctions on buyers of Russian exports, are serious and require analysis.

“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 Trump now wants to give more weapons to Ukraine and is threatening increased sanctions if Russian President Vladimir Putin doesn't agree to end the war in 50 days. The president explained why in a phone call with our partners at BBC News.

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