Ahead of a critical meeting with China, the U.S. said it would consider implementing sanctions against China if Beijing did not address North Korea.
Responding to a tweet by President Donald Trump, North Korean media said the distance between New York and North Korea was "not a long distance" to strike.
Pyongyang said the U.S. would suffer a "bitter disgrace" if it did not roll back its hostile stance toward North Korea.
In the latest commentary by state-run media, North Korea asserted its right to maintain nuclear weapons against U.S. "world domination."
North Korea's state-run media says the U.S. is risking "further disgrace" in addition to possible nuclear retribution.
Russian lawmaker Vyacheslav Alekseyevich Nikonov said nuclear weapons would be necessary in the event of a U.S. or NATO invasion of Crimea or eastern Ukraine.
North Korean ambassador to the U.S. Choe Il said Pyongyang isn't scared of the U.S. and would conduct a sixth nuclear weapons test on Kim Jong Un's terms.
Satellite imagery shows new activity at North Korea's main nuclear weapons site as Pyongyang warns the "dark clouds of a nuclear war hang heavily."
The Kremlin swiftly denied the report and its source, a former Russian military spokesman, blasted foreign media for misinterpreting his words.
Top Russian political and military officials said the U.S.'s missile defense shield in Europe may encourage Washington to launch a nuclear attack on Moscow.
While it may have been a routine test of the LGM-30 Minuteman III, the timing of the nuclear deterrent launch has some observers concerned.
A reporter on the ground says it's the little things you notice at the huge displays of force that say the most about the regime.
The Kinetic Energy Projectile launches a tungsten-based missile at Mach 3 that delivers a "devastating" load of hot metal fragments.
Russia-based leading cybersecurity firm Kaspersky revealed an intricate, secret program by which North Korea sponsored electronic heists to fund its nuclear weapons program.
Former North Korean ambassador to the U.K. Thae Yong Ho said Kim Jong Un was ready to defend his government at all costs, including by nuclear force.
Speaking from behind his desk in the Oval Office, Trump also declared himself "very angry" at North Korea's ballistic missile test.
Funnier than "The Apprentice," scarier than "The Walking Dead," Trump's talk is one for the ages—or until next time.
Pyongyang's nuclear facilities must be properly monitored, rather than kept hidden.
Mattis' remarks come amid concern that North Korea could be readying to test a new ballistic missile, in what could be an early challenge for Trump's administration.
It comes as the North promised further nuclear tests this year.