North Korea is threatening to launch nuclear missiles at the U.S. mainland in response to what it calls "reckless acts of aggression" by the U.S. military.
U.S. naval ships were deployed to the Korean Peninsula after North Korea's most recent missile tests.
But instead of military action, President Trump seems to want China — North Korea's closest ally — to make the Hermit Kingdom change its behavior.
Trump met with China's president, Xi Jinping, at his Mar-a-Lago resort in Florida. Trump reportedly pressured Xi to take a harder stance on North Korea, offering friendlier trade policies as an incentive.
But Trump's tweets could indicate the U.S. and China couldn't reach an understanding. He wrote: "If China decides to help, that would be great. If not, we will solve the problem without them!"
There's a good chance for even more provocation from North Korea. It could execute even more missile tests on April 15, the birthday of the nation's founder and Kim Jong-un's grandfather, Kim Il-sung.
