North Korea fired two short-range missiles into the Sea of Japan early Thursday, the first such tests since May. South Korean military officials said one of the two missiles tested appeared to be a new design. The tests came as the Pentagon continued preparation for joint war games with South Korea’s military scheduled for next month, and weeks after President Trump held a surprise trip to meet with North Korean leader Kim Jong-un at the Demilitarized Zone separating the north and south, where Trump pledged to restart denuclearization talks.