Japan's government is planning four-way and three-way summit meetings with the United States and other Asia-Pacific nations on the sidelines of a NATO leaders' gathering in Spain.
The two top-level meetings under consideration include one between the leaders of Japan, South Korea, Australia and New Zealand. They have been invited as partners to the NATO summit scheduled for late this month in Madrid.
Japanese Prime Minister Kishida Fumio also hopes to arrange another summit with South Korea and the US.
Kishida wants to discuss a range of security issues with the leaders of the Asia-Pacific nations.
They include the security environment in the Indo-Pacific region and responses to China's maritime activities and North Korea's nuclear and missile development.
Kishida also hopes to lay out more details of a plan he announced at a recent security forum in Singapore on how to maintain and reinforce peace and order in the Indo-Pacific region.
Officials suggested it is possible that those three-way and four-way talks will be combined into a five-way summit.