Trump Optimistic on Kim Deal; North Korea Warns Its 'Patience Wearing Thin'

U.S. President Donald Trump says diplomatic efforts with North Korea are going well, even as Pyongyang is warning its patience is wearing thin. In a statement coinciding with the one-year anniversary of Trump's summit with Kim Jong Un in Singapore, a North Korean foreign ministry official Wednesday warned "the U.S. would be well-advised to change its current method of calculation." VOA Diplomatic Correspondent Cindy Saine has more from the State Department.