North Korea may resume tests of its nuclear weapons and intercontinental ballistic missiles.
State media KCNA said Thursday that Pyongyang was considering lifting a self-imposed suspension on those activities.
Tension has been rising between the U.S. and North Korea in recent weeks over Pyongyang's unusually-rapid series of short-range missile tests, conducting four so far this year.
But North Korea has not tested its nuclear weapons or long-range missiles since 2017, as it started engaging in denuclearisation talks with South Korea and the United States.
Before that, ittested a missile capable of striking the U.S. mainland.
However, Washington's push for fresh sanctions this month was called 'hostile' by Pyongyang.
Its powerful politburo of the Workers' Party said the U.S. had reached a 'danger line', citing its continued joint drills with Seoul and its repeated calls for sanctions.
The U.S. State Department and White House did not immediately respond to a request for comment.
Pyongyang has defended the missile launches as its sovereign right to self-defense, and accused Washington of applying double standards.