A separate meeting between Prime Minister Shinzo Abe and U.S. President Barack Obama is being arranged for the Group of Eight summit June 17 and 18, according to a government source.

Abe is expected to seek U.S. understanding and support for Japan's position in addressing North Korea's nuclear and missile threats and the abductions of Japanese nationals, the source said.

The leaders will aim to reaffirm bilateral cooperation in dealing with North Korea, after Tokyo failed to inform Washington in advance of a visit last month to Pyongyang by Abe adviser Isao Iijima.

Abe will also likely deliver a speech in London's financial district on Japan's economic policy when he visits Britain for the G-8 summit, according to the source.

The prime minister, hoping to attract outside investment, will explain Japan's new growth strategy as well as economic and fiscal policy blueprints that will likely be approved by the Cabinet on June 14, the source said.

He will stress his administration's efforts to improve the government's fiscal health and try to gain support for his policies, dubbed "Abenomics," aimed at turning around the deflation-battered economy, the source said.