North Korea warned Monday that U.S. actions were bringing the Korean Peninsula “to the brink of nuclear war.” The warning came as the U.S. and South Korea held massive war games, mobilizing warships, thousands of troops and some 200 U.S. planes—many of them capable of deploying nuclear bombs. Earlier this year, North Korea said it would freeze its nuclear weapons program in exchange for an end to U.S. and South Korean war games, an overture rejected by the Trump administration.