Davies begins his visit Monday, starting with talks with his counterparts in South Korea. He'll head to Japan after he meets Wednesday with senior Chinese officials
Davies told the Senate Foreign Relations Committee in March that North Korea's conventional military and nuclear weapons activity presented an "unacceptable threat" to national security.
North Korea will set off on a path of denuclearization if the "regime is at all wise," he said.
South Korea's Yonhap News Agency this week reported Chinese officials were working to restart long-stalled six-party nuclear negotiations. The report said Beijing wouldn't gain much traction without support from its negotiating partners in the United States.
Yonhap reported Chinese officials would hold a seminar on nuclear negotiations Sept. 18.
North Korea conducted an underground test of a nuclear device in February, its third since 2006.
The State Department said Thursday Davies would return to Washington Sept. 13.
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