China rejects Trump's claim to 60 Minutes about clandestine nuclear tests, as a senior official seeks to clarify the president's plans for U.S. tests.

China has always maintained an explicit no-first-use policy, meaning that it would only use nuclear weapons in retaliation for another nuclear attack. Partially for financial reasons, it also adopted a minimalistic approach for its force structure, seeking only enough weapons to deter an opponent.

Democrats secured significant wins against Republicans in key races across the US on Tuesday. A major theme among Democratic candidates was countering President Donald Trump’s agenda, with campaigns centered on protecting democracy, cost-of-living issues and more. Here are the results: