July 4, 2017 -- North Korea succeeds for first time in test-firing intercontinental ballistic missile.

July 28 -- North Korea launches its second ICBM, unusually late at night.

Aug. 8 -- U.S. President Donald Trump warns he will counter North Korea with "fire and fury like the world has never seen" if the country further endangers the United States.

Sept. 3 -- North Korea conducts its sixth nuclear test.


Sept. 15 -- North Korea fires intermediate-range ballistic missile over Japan into the Pacific with flight distance of 3,700 kilometers, the longest yet, putting the U.S. territory of Guam within range.

Sept. 19 -- U.S. President Donald Trump, in his debut address to the U.N. General Assembly, calls North Korean leader Kim Jong Un "Rocket Man."

Sept. 22 -- Kim Jong Un reacts sharply to Trump's U.N. address in a rare statement, saying he will "surely and definitely tame the mentally deranged U.S. dotard with fire."

Oct. 1 -- Trump tells his top diplomat, Secretary of State Rex Tillerson, to stop "wasting his time" trying to negotiate with Kim Jong Un

(Hwasong-15 intercontinental ballistic missile. Photo courtesy of Korea Media)

Nov. 29 -- North Korea claims it successfully test-fired its new intercontinental ballistic missile capable of hitting anywhere in the United States with a nuclear warhead.

Jan. 1, 2018 -- Kim Jong Un, in New Year's address, says a nuclear button is always on his desk; Kim also expresses readiness to send athletes to Winter Olympics in Pyeongchang, South Korea.

Jan. 2 -- Trump ridicules Kim Jong Un over his nuclear button, saying the U.S. button is "much bigger and more powerful."


Jan. 4 -- The United States and South Korea agree to postpone annual joint military exercises until after Winter Olympics and Paralympics.

Jan. 9 -- North and South Korea agree at ministerial-level talks to the North sending athletes to the Olympics.

Feb. 9 -- North and South Korean athletes march together under a unified Korean flag at the Olympics' opening ceremony.

Feb. 10 -- South Korean President Moon Jae In and Kim Yo Jong, sister and close aide to Kim Jong Un, hold talks in Seoul. The North invites Moon to visit North Korea.

Feb. 23 -- The United States announces a slew of measures against North Korea that President Donald Trump called the "heaviest" sanctions ever imposed on the country.

Feb. 25 -- High-level North Korean official visits South Korea for Olympics' closing ceremony, meets with Moon in Pyeongchang.

March 5 -- South Korea's special envoys visit North Korea and hold talks with Kim Jong Un.

(Photo courtesy of the South Korean presidential office)

March 6 -- South Korea's presidential office unveils the outcome of the envoy's meeting with Kim Jong Un, including agreement of a summit meeting between the two Koreas in late April.

March 8 -- Senior South Korean official says Trump said he would meet Kim Jong Un by May to achieve denuclearization.

(Impersonators of Kim Jong Un and Donald Trump appear at the Feb. 9 Pyeongchang Winter Olympics opening ceremony in South Korea)

More on North Korea:

Trump to meet Kim Jong Un by May for 1st U.S.-N Korea summit

Abe to visit U.S. in April to discuss N. Korea with Trump

Inter-Korea summit breakthrough leaves Japan on back foot