Lee Jong-seok, deputy head of the presidential National Security Council (NSC) of South Korea, departed for Washington Tuesday amid reports Seoul is arranging a South Korea-US summit in June over the stalled six-way talks on the nuclear issue of the Korea Peninsular, according to Yonhap.

Lee will meet with US National Security Advisor Stephen Hadley and other officials on "bilateral cooperation and issues of mutualconcern," it said.

The NSC said Lee was invited to get acquainted with US NSC officials after the change in the lineup in the second George W. Bush administration, which was inaugurated in January.

Source: Xinhua