CIA Director Mike Pompeo speaks during the Foundation for Defense of Democracies (FDD) National Security Summit on October 19, 2017 in Washington.
Speaking at a forum in Washington, Mr Pompeo said: "We ought to behave as if we are on the cusp of them achieving that objective".
His comments come as US National Security Adviser, General H.R. McMaster said the US is "running out of time" to sort out the crisis without using military force.
"Accept and deter is unacceptable".
CIA Director Mike Pompeo expressed his support for President Donald Trump's recent decision to decertify the Iran nuclear deal during an interview on Thursday before more generally discussing the agency's goal to be "more vicious" in fighting its adversaries.
The comments by Pompeo and McMaster come as tensions between the US and North Korea have been steadily rising following Pyongyang's latest nuclear test last month, it's sixth overall, and repeated tests of what intelligence officials have assessed to be both intermediate and long range ballistic missiles.
"There's always a risk".
Pompeo further expressed concern over the exchange of nuclear technology between Iran and North Korea, and said it was a major danger for the two to be assisting each other in the area of nuclear weapons testing. "It needs to be the last", Schiff said.
"Stories are going around out there that if the president inches closer to some kind of a nuclear confrontation with North Korea, that those guys are gonna do something, they're gonna lock him in a room, they're gonna tackle him", Lauer theorized. "And whether all of it can be destroyed with one strike, I doubt it", he said.
A statement through its propaganda mouthpiece said: "All the Koreans in the north, the south and overseas will, with concerted efforts, mercilessly smash the war frenzy of the United States and south Korean puppet warmongers to get rid of the abyss of ruin through risky war gambling and inflict the most miserable death on the invaders, provokers increasing the danger of a nuclear war".
Other North Korean officials have accused the USA of making preparations for war, citing the presence of the USS Ronald Reagan, a nuclear-powered aircraft carrier, conducting exercises to the east of the Korean Peninsula.