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

Russia has rejected President Trump's "ultimatum" for Moscow to sign a ceasefire deal to end the war in Ukraine within 50 days on Tuesday as "unacceptable," calling for continued negotiations and insisting that the invasion ordered by President Vladimir Putin would continue until its goals are achieved.

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

US President Donald Trump’s latest threat of 100% tariffs on Russia would risk complicating relations with two nations crucial to his economic and strategic goals: China and India.

U.S. President Donald Trump said he would introduce "tariffs at about 100%" on Russia's trade partners if the Kremlin doesn't reach a peace deal with Ukraine.

Trump's threat against Russia runs parallel to a Senate-led effort to pass crippling sanctions on countries that buy Russian energy.

President Trump announced Saturday his administration is imposing 30% tariffs on imports from the European Union and Mexico, hiking up the tariff rate for two of the U.S.’s biggest trading partners despite lengthy negotiations.