U.S. President-elect Donald Trump has named a former official who played a key role in his two summits with North Korean leader Kim Jong Un to advise him on national security, the latest sign that Trump could seek to revive diplomatic outreach to Pyongyang.

The former president announced his appointment of Alex Wong to serve as principal deputy national security adviser and assistant to the president on social media on Saturday.

Wong previously servedas deputy special representative for North Korea and deputy assistant secretary for North Korea in the Bureau of East Asian and Pacific Affairs at the State