(Photo: AP)

The first step forward in establishing new US-North Korea ties could be the exchange of officers, CNN said, citing two high-level diplomatic sources. The US will send liasion officers to set up an office in North Korea, led by a senior foreign service officer who speaks Korean, if this plan moves forward.

Trump and Kim are scheduled to hold their second summit on Feb. 27 and 28 in Hanoi. They are expected to focus on fleshing out Kim's commitment to complete denuclearization and corresponding measures from the US.