South Korea has long come under targeted criticism from Trump, who has called it a "money machine" that takes advantage of American military protection.

Trump says he has a good relationship with Kim Jong Un and expects to meet 'someday' ahead of White House summit with South Korea's president Lee Jae Myung.

RCP's Phil Wegmann asked President Trump during an Oval Office meeting with the South Korean president on Monday whether the U.S. would consider reducing the number of troops stationed in Korea and whether he views Korea as two countries or one country waiting to be unified.