SEOUL - Republic of Korea President Moon Jae-in on Sunday named top-level presidential staff and cabinet members on security, foreign affairs and economy.

Moon told a news conference at the presidential Blue House, announcing his appointment of Chung Eui-yong as his top national security adviser who leads the National Security Office of the Blue House.

Chung is a career diplomat who was mainly in charge of trade. He is a former lawmaker of the Uri Party, a predecessor of the current ruling Democratic Party.

During the presidential campaign, Chung led a special advisory group overseeing Moon's diplomatic policy. Since Moon's inauguration, Chung led the Blue House's advisory group on security and foreign affairs.

The appointment indicated Moon's will to place more significance on diplomacy, rather than a hard-line approach, in dealing with issues on the Democratic People's Republic of Korea and the Terminal High Altitude Area Defense missile interception system.

The top security post was usually assumed by former military commanders, which led to a hard-line approach to security issues. Chung's appointment heralded dialogue and diplomacy in how the ROK deals with security matters.

Moon told reporters that under the past governments, security was seen from the narrow perspective of national defense, saying the diplomatic role became more significant in tackling the DPRK's nuclear program.

The qualification for the head of the National Security Office, Moon said, will be a diplomatic capability given the intertwined situations between security, diplomatic and economic affairs.

Asked about THAAD, Chung said the US missile shield deployment lacked procedural legitimacy, noting that the ROK's position on THAAD was explained sufficiently to relevant countries, which he said recognized the ROK's position.

Moon Chung-in, an honorary professor at Yonsei University in Seoul, and Hong Seok-hyun, former chief of a local newspaper and cable channel, were named special presidential aides for unification, security and diplomatic affairs.

Prof. Moon is a noted ROK expert on international politics who is known to have been deeply involved in setting theoretical foundations for a "Sunshine Policy" of engagement with the DPRK and a balanced diplomacy in Northeast Asia.

Hong is a former ambassador to the United States and was sent to Washington earlier this week as special envoy of President Moon. He is known to have a broad range of personal network in the United States.

President Moon told reporters that he will discuss the new government's policy stance on unification, security and diplomatic affairs together with the two new special aides.

Xinhua