South Korea President Moon Jae-in waves to neighborhood residents as he arrives at the presidential Blue House in Seoul, South Korea May 10, 2017. (photo: REUTERS/Kim Kyung-Hoon)

The presidential office said Wednesday other appointments included Im Jong-seok, chief of staff for Moon's campaign, as chief of staff, and a former Blue House security official to head presidential security. He also named Joo Young-hoon, an expert on North Korean affairs, to head the National Intelligence Service (NIS).