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.

Russia continued its nightly bombardment of Ukrainian cities overnight into Tuesday, after President Donald Trump said the U.S. would send military equipment to Kyiv.

President Trump said Russia must make a peace deal with Ukraine within 50 days or he'll impose 100% tariffs on countries that buy oil and gas from them. CBS News' Ed O'Keefe has the latest.