North Korea is 'greatest immediate threat' to U.S.: McMaster
White House National Security Adviser H.R. McMaster said on Saturday that North Korea's nuclear efforts were the 'greatest immediate threat' to the United States and added that Americans should not feel afraid to attend the Winter Olympics in South Korea.
"There is a military option" on North Korea: McMaster
White House National Security Adviser H.R. McMaster said on Friday the United States was approaching the limit of what sanctions and diplomacy can accomplish in terms of reigning in North Korea's weapons program.