The dollar jumped to a 3-week top on Tuesday while stock markets in Asia were choppy as an historic US-North Korea summit got underway in Singapore
Kim may see the sit-down with Trump as necessary to easing pressure from crushing sanctions and to winning security assurances in a region surrounded by enemies.
North Korea's Kim Jong Un hopes Donald Trump summit will 'end history of confrontation': Moon Jae-in
Donald Trump rattled the region on Thursday by cancelling his meeting with Kim, citing open hostility from Pyongyang.
Seoul's unification ministry, which handles relations with the North, said it had received a message from Pyongyang that it was cancelling Wednesday's high-level talks 'indefinitely'.