
A new type of intermediate-range missile, the Pukguksong-2, was launched by North Korea on February 12.
It was their first launch since US President Donald Trump took office.
It was their first launch since US President Donald Trump took office.

Images published by North Korean state media purport to show a submarine-launched ballistic missile (SLBM) off the eastern coast of the Korean peninsula on Saturday, April 23, 2016. Five days later, South Korea claims the North launched two more missiles on April 28 that failed.

In March, 2016, state media says Pyongyang has miniaturized nuclear warheads.

On February 9, 2016 South Korea's Defense Ministry releases images of debris believed to be a part of North Korean rocket, which was launched on February 7. Pyongyang said it had successfully launched Earth observation satellite Kwangmyongsong-4 into orbit.

On January 6, North Korea claims to have successfully tested a hydrogen bomb. Seismic waves indicate an "artificial earthquake" near Punggye-ri, North Korea's main nuclear testing site.

On May 9, 2015, North Korea state media reports the country has successfully fired a "cutting-edge" anti-ship missile from a submarine.

North Korea test-fired a new "ultra-precision" intelligent rocket to be deployed across its navy, the state-run Korean Central News Agency said on February 7, 2015.

North Korea conducted its third nuclear test on February 12, 2013 -- the first under Kim Jong Un. The nuclear test site and water cooling plant are seen in this satellite image.

This picture from KCNA on December 12, 2012 shows the North Korean rocket Unha-3, carrying the satellite Kwangmyongsong-3, lifting off from the launching pad in North Korea.

A missile is displayed during a military parade to mark 100 years since the birth of North Korea's founder Kim Il-Sung in Pyongyang on April 15, 2012.

This undated file picture released by KCNA on January 5, 2009 shows an artillery unit conducting a drill at an undisclosed location in North Korea.