North Korea conducted another nuclear test on Sunday, claiming it had detonated a hydrogen device that it could fit on a missile capable of reaching the United States mainland.

South Korean and Japanese authorities confirmed that North Korea had carried out a huge test — it had an estimated yield of 100 kilotons — although Pyongyang's incendiary claims about its technical advances could not be verified.

Regardless, this is now North Korea's sixth test since it began testing 11 years ago, and it is the first of the Trump administration.

[In latest test, North Korea detonates its most powerful nuclear device yet]