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Chronology of major events related to N. Korea's nuclear program

The following is a chronology of major events related to North
Korea's nuclear development program.
Oct. 9, 2006 -- North Korea conducts 1st nuclear test.
May 25, 2009 -- North Korea conducts 2nd nuclear test.
Dec. 17, 2011 -- Leader Kim Jong Il dies.
April 11, 2012 -- Kim Jong Un named "first secretary" of ruling
Workers' Party of Korea.
Dec. 12 -- North Korea launches rocket; says it successfully
launched "satellite."
Feb. 12, 2013 -- North Korea conducts 3rd nuclear test.
April 2 -- North Korea declares restart of all nuclear
facilities at Yongbyon complex.
Jan. 6, 2016 -- North Korea conducts 4th nuclear test; claims it
was a hydrogen bomb.
Feb. 7 -- North Korea launches long-range ballistic missile.
March 2 -- U.N. Security Council adopts resolution tightening
sanctions against North Korea.
May 9 -- Kim Jong Un assumes post of chairman of ruling Workers'
Party of Korea.
June 22 -- North Korea succeeds in launching intermediate-range
Musudan ballistic missile for 1st time.
Aug. 3 -- North Korea fires medium-range Rodong ballistic
missile into Japan's exclusive economic zone in Sea of Japan.
Aug. 17 -- North Korea tells Kyodo News it has resumed
production of plutonium and highly enriched uranium.
Aug. 24 -- North Korea fires submarine-launched ballistic
missile into Japan's air defense identification zone.
Sept. 5 -- North Korea simultaneously fires 3 ballistic missiles
believed to be medium-range Rodong types into Japan's EEZ in Sea of
Japan off Hokkaido.
Sept. 9 -- North Korea conducts 5th nuclear test.
Jan. 1, 2017 -- Kim Jong Un says his country has entered final
stage of preparing to test-launch intercontinental ballistic missile.
Jan. 20 -- Donald Trump takes office as U.S. president.
Feb. 12 -- North Korea fires new medium- to long-range
Pukguksong-2 ballistic missile from Kusong.
March 6 -- North Korea fires 4 Scud-ER missiles almost
simultaneously, 3 of which land within Japan's EEZ in the Sea of
Japan.
April 5 -- North Korea launches ballistic missile from eastern
coastal city of Sinpo.
April 15 -- North Korea displays range of new military hardware
in vast parade marking 105th anniversary of founding leader Kim Il
Sung's birth.
April 16 -- North Korea unsuccessfully launches ballistic
missile from Sinpo.
May 10 -- Moon Jae In sworn in as South Korean president.
May 14 -- North Korea fires new medium- to long-range Hwasong-12
ballistic missile from vicinity of Kusong.
May 21 -- North Korea launches Pukguksong-2 from vicinity of
Pukchang.
May 29 -- North Korea fires ballistic missile from vicinity of
eastern coastal city of Wonsan; missile falls into Japan's EEZ.
July 4 -- North Korea succeeds for 1st time in test-firing
intercontinental ballistic missile, Hwasong-14, from vicinity of
Kusong; missile lands in Japan's EEZ.
July 28 -- North Korea launches 2nd Hwasong-14 intercontinental
ballistic missile from Mupyong-ri, unusually late at night; missile
lands in Japan's EEZ.
Aug. 5 -- U.N. Security Council imposes fresh sanctions on North
Korea.
Aug. 9 -- North Korea says it is contemplating missile strike
against the U.S. Pacific territory of Guam.
Aug. 26 -- North Korea fires 3 short-range ballistic missiles
from vicinity of Gitdaeryong in eastern province of Gangwon.
Aug. 29 -- North Korea fires intermediate-range Hwasong-12
ballistic missile over Hokkaido in northern Japan that lands in
Pacific.
Sept. 3 -- North Korea conducts 6th nuclear test.
Sept. 11 -- U.N. Security Council adopts new sanctions
resolution to impose first restrictions on exports of crude oil and
petroleum products to North Korea as punishment for 6th nuclear test.
Sept. 15 -- North Korea fires intermediate-range ballistic
missile over Hokkaido into the Pacific with flight distance of 3,700
km, the longest yet, putting Guam within range. (Sept. 15)