Japan will continue to press North Korea for concrete action to fulfill its denuclearization promises and account for its abductions of Japanese nationals, the Foreign Ministry said Friday in its annual report on diplomacy.

The Diplomatic Blue Book 2009 criticizes Pyongyang for failing to show a positive attitude and says Japan will work on resolving pending issues with China and South Korea through further dialogue and exchanges.

The report describes last year as historic for its unprecedented number of visits among top leaders and "groundbreaking progress" toward a "new dimension" of trilateral cooperation.