Putting immediate pressure on new South Korean President Moon Jae-in's administration, North Korea tested a new ballistic missile that landed in the sea of Japan.
Two tests conducted by the North last month had failed. Intelligence officials stated that they are determining the nature of the test.
However, US officials said that the missile test was inconsistent with that of a ballistic missile.
North Korea's missile launches
29 May 2017
North Korea test fires ballistic missile, Japan vows "concrete action"
North Korea has test-fired a short-range ballistic missile which flew for six minutes before landing in the Sea of Japan.
The test, the latest in a series of missile launches, defied US President Donald Trump who on May 26 vowed that the North Korean problem "will be solved."
Japanese PM Shinzo Abe condemned today's launch vowing "concrete action" against North Korea.
08 Jun 2017
N. Korea fires 4 anti-ship missiles as tensions simmer
North Korea has fired four anti-ship missiles off its east coast, near the port city of Wonsan.
The South Korean military said the launches show the reclusive regime's"precise targeting capability."
So far in 2017, North Korea has conducted 16 missile launches in 10 tests, all of which have contributed to increased regional tensions.
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North increasing belligerent rhetoric
Since the start of the year, North Korea has been increasing its belligerent rhetoric against the US and South Korea. Tensions peaked when Pyongyang vowed to sink a US aircraft carrier, and to carry out daily missile tests.
About North Korea and its nuclear programs
For over decades now, North Korea has been the most secretive country; its nuclear weapons program has its roots in the 1950s.
It is believed that the country possesses over 1,000 missiles of different capabilities, including long-range ones that could strike the US.
The country's nuclear program progressed over decades; from tactical artillery rockets during the 1960-70s to the present day's nuclear warheads.
Nuclear weapon tests in North Korea
In October 2006, North Korea conducted its first nuclear weapon test, yield: 1 kilotonne.
In May 2009, a second nuclear device was detonated, yield: 5 kilotonnes
In February 2013, the third nuclear test was conducted, yield: 6-7 kilotonnes.
On January 6, 2016, North Korea claimed it conducted its first thermonuclear test.
On September 9, 2016, the fifth test was conducted, yield: 10 kilotonnes.
North Korea's ballistic missile tests in 2017
On February 12, 2017, North Korea test-fired a ballistic missile which travelled around 500km into the Sea of Japan.
On March 6, 2017, Japan said North Korea fired four ballistic missiles, of which, three landed in its exclusive economic zone.
On March 22, 2017, North Korea fired a missile from its east coast that exploded seconds after being launched.