North Korea has reportedly produced a nuclear warhead that can fit inside missiles, according to the Washington Post.
The newspaper claims U.S. intelligence officials have concluded the country has crossed "a key threshold on the path to becoming a full-fledged nuclear power."
The report comes after U.S. analysts surmised that North Korea's arsenal is up to 60 nuclear weapons.
North Korea and leader Kim Jong Un have continued its missile tests, despite protests and new sanctions from the U.N. Security Council.
According to the report, North Korea has conducted five nuclear tests since 2016, with the last coming in 2016. But until now, the country had yet to produce a warhead that could fit inside its missiles.