President Vladimir Putin intends to keep fighting in Ukraine until the West engages on his terms for peace, unfazed by Donald Trump's threats of tougher sanctions, and his territorial demands may widen as Russian forces advance,

Ivo Daalder, a senior fellow at Harvard Belfer Center, says that President Donald Trump realizes that he needs to change course because the Russian leader has been playing him "for years."

“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.”

Ukrainian President Volodymyr Zelenskyy has expressed gratitude for U.S. President Donald Trump's plan to send more weapons to Ukraine, particularly Patriot air defense missile systems.

Bloomberg journalists answer your questions about Trump’s tariff threat to Putin over the war in Ukraine — will it work?

Kyiv's mayor is among those asking why there has to be a delay to introducing new tariffs as the fighting continues.

He's killing too many people," Trump said. "So we're sending some defensive weapons to Ukraine."Start the day smarter. Get all the news you need in your inbox each morning. Trump did not approve the weapons pause,

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 said he's “disappointed but not done” with Russian President Vladimir Putin, following an announcement of renewed military support for Ukraine and a plan to target buyers of Russian oil with tariffs up to 100% if a deal to end the war isn’t reached within 50 days.

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.