"Does this guy have anything better to do with his life?"

That is the question US President Donald Trump is asking North Korean leader Kim Jong Un after that country's latest missile launch.

Trump wrote on Twitter late Monday that it's "Hard to believe that South Korea ... and Japan will put up with this much longer."

And he urged North Korea's biggest ally, China, to "put a heavy move on North Korea and end this nonsense once and for all!"

South Korean officials said early Tuesday that North Korea had launched another ballistic missile toward Japan, part of a string of recent test-firings as the North works to build a nuclear-tipped missile that could reach the United States.

For its part, North Korea claimed to have tested its first intercontinental ballistic missile. But its declaration conflicted with South Korean and U.S. assessments earlier.

The U.S. Defense Department said U.S. Pacific Command detected and tracked the launch of a land-based, intermediate range ballistic missile from North Korea's Panghyon Airfield. The missile was tracked for 37 minutes and landed in the Sea of Japan.