One of North Korea's top nuclear negotiators with the United States has served up mild criticism of remarks by White House national security adviser John Bolton, calling him "dim-sighted" — the second condemnation of a top U.S. official in days.

On Saturday, the North's official Korean Central News Agency cited First Vice Foreign Minister Choe Son Hui as criticizing Bolton over a recent interview with Bloomberg News. In the interview, Bolton said the U.S. would need "a real indication" that North Korean leader Kim Jong Un is ready to give up his nuclear weapons before Trump will meet with him for a third summit.

"The president is fully prepared to have a third summit if he can get a real deal," Bolton said in the interview.