U.S. President Donald Trump waves to members of the media as he walks on the South Lawn after arriving at the White House in Washington, Monday, following a visit to Minnesota. AP-Yonhap

By Park Ji-won

President Donald Trump responded cautiously to North Korean leader Kim Jong-un's demand for the U.S. to change its attitude by the end of the year in order to hold a third summit.

Trump said denuclearization talks between Washington and Pyongyang were moving along "just perfectly" after the breakdown of their summit in Hanoi in February.

"I don't want it to move fast," Trump was quoted as saying during a roundtable on the economy and tax reform in Burnsville, Minnesota. "It doesn't have to move fast. Right now it's moving along just perfectly and we have a good relationship."