U.S. President Donald Trump on Tuesday said he continues to have confidence in North Korean leader Kim Jong Un and his willingness to denuclearize, reiterating his faith in what he believes to be the "good relationship" between the two.

Speaking in London ahead of a summit of North Atlantic Treaty Organization (NATO), the U.S. President described the DPRK leader as "rocket man" and said he hoped Kim would abide by an agreement signed with the U.S. in Singapore last year.