Nov. 29, 2017: North Korea launches an intercontinental ballistic missile from Sain Ni near Pyongyang. It flew a distance of 960 kilometers for 50 minutes at an altitude of 4,500 kilometers, later landing in the Sea of Japan, 210 kilometers off the west coast of Japan's Aomori prefecture. Sept. 15, 2017: North Korea launches another Hwasong-12 intermediate-range ballistic missile that flies over northern Japan. The missile reached an altitude of 770 kilometers and flew a distance of 3,700 kilometers. Sept. 3, 2017: North Korea carries out a sixth nuclear test . Pyongyang claims it was a test of a hydrogen bomb. Aug. 28, 2017: North Korea launches a Hwasong-12 intermediate-range ballistic missile that flew over Japan's Hokkaido region . The missile travelled 2,700 kilometers and reached a maximum height of 550 kilometers. Aug. 26, 2017: North Korea test-fires three short-range ballistic missiles. Two travel approximately 250 kilometers.