Defense Minister Itsunori Onodera plans to visit Vienna from July 29 to meet with the head of Europe's security cooperation body to discuss an Asia-Pacific conflict-prevention framework at a time when China is increasingly active in regional waters, a ministry source said Wednesday.

The Organization for Security and Cooperation in Europe draws members mainly from countries in Europe and Central Asia, including former Cold War adversaries, and provides a platform for dialogue to prevent conflicts among member states.