North Korea's nuclear weapons program since 1984
Pyongyang defies toughest UN sanctions yet with another missile launch
TOKYO -- On Sept. 15, just four days after the United Nations Security Council unanimously approved its toughest sanctions yet on North Korea, the country showed its defiance by firing what is thought to have been an intercontinental ballistic missile over the Japanese island of Hokkaido.
According to the South Korean military, the missile was fired eastward from Pyongyang and likely reached an altitude of 770km and flew 3,700km before landing in the Pacific.
On Sept. 3, North Korea conducted an underground nuclear test just days after the country fired a missile over Japan. It was the country's sixth nuclear test and its first since Sept. 9, 2016. State media called it a hydrogen bomb explosion.
The successive provocations have raised objections from the international community and further undermined stability on the Korean Peninsula.
The launch on Sept. 15 was Pyongyang's 23rd missile test this year, according to government announcements and data from the Center for Strategic and International Studies.
North Korea has already exceeded last year's count of 21 missile launches, its highest annual tally since 1984.
Here is a timeline of the country's missile launches and nuclear tests dating back three decades, to the days of Kim Il Sung.