North Korea has not taken the steps necessary to denuclearize despite an agreement made between its leader, Kim Jong-un, and US President Donald Trump in June, White House national security advisor John Bolton said on Tuesday. Speaking in an interview on Fox News, Bolton also said US Secretary of State Mike Pompeo was prepared to return to North Korea for another meeting with Kim. “What we really need is not more rhetoric,” Bolton said. “What we need is performance from North Korea on denuclearization.” The advisor added that Washington has lived up to the Singapore declaration that followed the June 12 summit Trump and Kim. “It’s just North Korea that has not taken the steps we feel are necessary to denuclearize,” Bolton said. According to him, Trump in a recent letter to Kim proposed sending Pompeo back to North Korea, and that Trump was ready to meet with Kim any time.