But negotiations broke down last year over Pyongyang's refusal to accept a verification plan for the declaration it made of it nuclear holdings and activities.

VOA: standard.2009.11.11

But negotiations have been stalled for months over Pyongyang's refusal to accept a verification program for the declaration of its nuclear holdings and activities it made last June.

VOA: standard.2009.03.25

But the six-party talks have stalled over Pyongyang's refusal to accept a verification program for the declaration of its nuclear assets and activities that was agreed to last June.

VOA: standard.2009.04.14

The leaders are expected to repeat a call from G8 foreign ministers urging North Korea to "fully cooperate" in the verification of its nuclear declaration and settle the issue of the country's past abductions of Japanese nationals.

BBC: G8 summit: The key issues

The U.S. State Department has said North Korea must provide a complete declaration of its nuclear program to the United States and its partners in talks on the nuclear issue -- Russia, China, Japan and South Korea -- to break the deadlock.

CNN: North Korea: U.S. to blame in nuclear talks deadlock

"This declaration must include all nuclear weapons, programs, materials and facilities, including clarification of any proliferation activities, " U.S. Assistant Secretary of State Christopher Hill told the Senate Foreign Relations Committee last month.

CNN: North Korea: U.S. to blame in nuclear talks deadlock