North Korea's latest missile launch on Wednesday was 'extremely problematic,' and Japan had lodged a strong protest over its nuclear-armed neighbor, Japan's top government spokesman said. Chief Cabinet Secretary Yoshihide Suga told a news conference that Japan absolutely can not tolerate North Korea's repeated provocative actions. North Korea fired a ballistic missile from its east coast into the sea off the Peninsula, South Korea's military said, a day ahead of a summit between US and Chinese leaders who are set to discuss Pyongyang's arms program.