The U.S. State Department has called on China to act in accord with its responsibilities in terms of implementing U.N. resolutions sanctioning North Korea.

The department made the call as it announced Thursday that Special Advisor for Nonproliferation and Arms Control Robert Einhorn will visit Seoul and Tokyo next week to discuss sanctions on North Korea and Iran.

The department said Einhorn will be accompanied by Treasury Department Deputy Assistant Secretary Daniel Glaser, who played a key role in imposing U.S. sanctions on Macao-based Banco Delta Asia in 2005 for engaging in money laundering with North Korea and for distributing North Korean superdollars.

Einhorn and Glaser also are set to visit China at the end of next month apparently in a bid to get Beijing to join efforts to implement U.N. sanctions on Pyongyang.

The U.S. is expected to mobilize all its diplomatic power to effectively implement the nonbinding U.N. sanctions.