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
Singapore, which was North Korea's seventh largest trading partner, suspended trade relations with it last year amid surging tension over its nuclear and missile programmes.
Pope Francis said on Sunday he hoped a forthcoming summit in Singapore between US President Donald Trump and North Korean leader Kim Jong Un will lead to peace for Korea.
Huge security has been deployed for the summit, with parts of the city-state in virtual lockdown.
It was on March 8 that a delegation visiting from South Korea came to the White House to deliver a message from Kim Jong Un to Trump
As the Singapore meeting with North Korean leader Kim Jong Un draws near, the president and his allies are growing increasingly anxious about how he can score a win on the world stage.
US President Donald Trump on Thursday announced his historic summit with North Korean leader Kim Jong Un will take place in Singapore on June 12.