North Korea has test-fired an intercontinental ballistic missile (ICBM) which reached an altitude of 4,500km and flew 960km.
The missile, the North's highest-ever ICBM test, landed in Japanese waters.
US President Donald Trump has responded by saying, "We will take care of it."
This is the latest in a series of Pyongyang's ballistic missile and nuclear weapons tests, leading to simmering regional tensions.
US, UK, Japan, South Korea condemn North Korean missile launch
US Defense Secretary James Mattis said the North's latest missile launch "went higher, frankly, than any previous shots they have taken."
He said Pyongyang was creating "ballistic missiles that threaten everywhere in the world."
Japan said it would "never accept North Korea's continuous provocative behavior."
South Korea also condemned the test while the British ambassador to the UN said it was a "reckless act."
Scientists: Missile could reach continental USA
Worryingly, the missile could've traveled over 13,000km on a standard trajectory, allowing it to reach "any part of the continental United States," according to the US-based Union of Concerned Scientists.
The scientists said the missile likely carried a very light mock warhead.
Hence, it could be incapable of carrying and delivering a much heavier nuclear warhead for the entire 13,000km distance.
Is North Korea a problem without a solution?
The latest missile test is North Korea's first in around two months.