Pentagon officials said details were still being worked out, and experts doubted Mr. Trump’s threat of huge tariffs for Russian trading partners.

Trump’s threats of secondary tariffs are “never going to go anywhere” as long as he is unwilling to impose costs on Moscow directly, Keir Giles, a senior fellow at the London-based Chatham House think tank, told NBC News Monday.

U.S. President Donald Trump threatened to hit buyers of Russian exports with sanctions unless Russia agrees a peace deal over the conflict in Ukraine, potentially complicating Moscow's oil sales to China,

U.S. Ambassador to NATO Matt Whitaker joins the ‘Brian Kilmeade Show’ to discuss President Donald Trump’s updated strategy for the Russia-Ukraine war and what it could mean for the path to peace.

President Trump has effectively handed Vladimir Putin an extraordinary green light: 50 days to finish off his brutal summer offensive in Ukraine before facing any consequences.

U.S. President Donald Trump's threat to choke off Russia’s oil revenue via secondary sanctions would deal a hammer blow to Moscow's finances, but markets are betting that the risk of higher energy prices will keep Washington from following through.

Latest news and live updates as Trump announces the U.S. will send Patriot missiles to Ukraine and meets with NATO's secretary general.

Donald Trump’s remarks on Ukraine on Monday were far from the biggest announcement the US president could have made. The good news for Kyiv is familiar. Trump has permitted NATO’s other members to buy American arms – a wide range of them,

Japan expressed hope on Tuesday that U.S. President Donald Trump's announcement on a Ukraine arms deal and potential secondary tariffs on Russia would lead to a just and lasting peace between the two countries.

With President Trump announcing a UFC match at the White House, wouldn't put in past him to say next he'll be staging a pay-per-view fight between Vladimir Putin and Volodymyr Zelensky.