Seoul: National Security Adviser Wi Sung-lac is set to depart for Washington this week for meetings with senior U.S. officials, sources said Monday, as the two sides are expected to discuss follow-up measures to the summit between President Lee Jae Myung and U.S. President Donald Trump in late October.

According to Yonhap News Agency, Wi is scheduled to head for the U.S. capital Tuesday and is widely expected to meet U.S. Secretary of State Marco Rubio, who doubles as national security adviser, according to the sources familiar with the issue. The trip comes after the allies released a joint fact sheet last month outlining trade and security agreements reached during the second Lee-Trump summit in South Korea's southern city of Gyeongju on Oct. 29, ahead of the Asia Pacific Economic Cooperation summit.

The presidential National Security Office in Seoul has formed three task force teams to handle working-level consultations with the U.S. on security-related agreements. The discussions are focused on key issues, including South Korea's push to develop nuclear-powered submarines, secure uranium enrichment and spent fuel reprocessing capabilities, and coordinate on defense budget matters.

Wi is also expected to discuss coordination on North Korea policy during his meetings as the White House recently released a new National Security Strategy. The document makes no mention of North Korea, raising questions in Seoul about whether the issue may be receiving less attention under the Trump administration. Both Lee and Trump have expressed their desire to resume dialogue with Pyongyang, but it remains uncertain whether the North would respond to dialogue overtures.