U.S. National Security Adviser John Bolton on Tuesday said North Korea has not taken the necessary steps towards denuclearization, calling for less talk from the DPRK and more action.

Speaking to Fox News, the U.S. official responded to recent claims from the DPRK which accused Washington of acting contrary to promises made during the Singapore summit between President Donald Trump and North Korean leader Kim Jong Un.

“What we really need is not more rhetoric. What we need is performance from North Korea on denuclearization,” Bolton said.

“What was significant about Singapore was the North Korean commitment to denuclearize, and