President Donald Trump has appeared to suggest on social media that the U.S. resume testing nuclear weapons for the first time in three decades. There was no indication that the U.S. would start detonating warheads, but the president offered few details about what seemed to be a significant shift in U.S. policy. He made the announcement on social media minutes before meeting with Chinese leader Xi Jinping on Thursday in South Korea. The U.S. military already regularly tests its missiles that are capable of delivering a warhead, but it has not detonated the weapons since 1992 because of a test ban.

Russia has tested a new nuclear-capable cruise missile, moving closer to deploying it, according to President Vladimir Putin. The Burevestnik missile, which has been in development for years, reportedly covered 8,700 miles in a key test last Tuesday. Putin claims the missile has an unlimited range and can evade missile defenses. However, many experts are skeptical, citing potential reliability and environmental concerns. The missile reportedly suffered an explosion in 2019, causing fatalities and a brief spike in radioactivity. Putin has directed preparations for deploying these weapons to Russia's armed forces.