SEOUL-- South Korean and Japanese military chiefs on Wednesday affirmed close bilateral cooperation against North Korea in phone talks.

South Korea's Defense Minister Song Young-moo and his counterpart Itsunori Onodera shared the view that the North's sixth nuclear test is a clear violation of U.N. Security Council resolutions and a grave challenge to the international community, according to Song's ministry.

They agreed that Pyongyang's reckless provocations will only deepen its isolation.

They promised to work together with the U.S. for the immediate and complete implementation of related U.N. resolutions and as a response to the North's nuclear and missile threats, added the ministry.

Source: Yonhap News Agency