South Korea’s top nuclear negotiator, Lee Do-hoon, landed in Washington on Monday for an expected series of meetings with senior U.S. officials about the status of talks with North Korea.

His arrival in the U.S. capital comes after Saturday’s round of negotiations between Washington and Pyongyang, held on an island near Stockholm, ended after 8.5 hours without a deal.

Lee and his American counterpart, Stephen Biegun, are expected to discuss next steps in their diplomatic efforts to strike a deal with the North over the future of its nuclear program.

“I plan to meet with Special Representative Biegun and discuss