LIVE STREAM: State Department Press Briefing on North Korea

(Briefing begins at the 21-minute mark)

The State Department is holding a briefing a day after it was revealed North Korea has miniaturized nuclear warheads for use in ballistic missiles, leading to an exchange of threats between the U.S. and the Kim Jong Un regime.

A day earlier, President Trump threatened North Korea with “fire and fury” in response to reports of a new milestone in the country’s nuclear quest.

Defense Secretary Jim Mattis said that the North Korean regime should cease any consideration of actions that would “lead to the end of its regime and the destruction of its people.”

Mattis says any action by North Korea would be grossly overmatched by the U.S., and that Pyongyang would lose any arms race or conflict it started. He says that while the U.S. is pursuing diplomatic solutions, the combined military power of America and its allies is the most robust on Earth.

Secretary of State Rex Tillerson has urged calm, saying he sees no “imminent threat” of attack.

State Department spokeswoman Heather Nauert will hold the briefing.