The Japanese government plans to draw up a new policy on missile defense by the end of the year.
The government held a National Security Council meeting on Friday with Prime Minister Abe Shinzo, Deputy Prime Minister Aso Taro, Chief Cabinet Secretary Suga Yoshihide and Defense Minister Kono Taro in attendance.
Japan's Defense Minister Kono Taro and US Defense Secretary Mark Esper have agreed to oppose China's unilateral attempts to change the status quo by coercion.
In a meeting in Guam on Saturday, Esper referred to Prime Minister Abe Shinzo's announcement of his resignation and called him a great leader who worked to strengthen bilateral ties in security and other areas.
Japan's Defense Minister Kono Taro says he will discuss regional issues and cooperation on national security with his US counterpart on Saturday.
Kono said in a news conference on Friday that he will hold talks with US Defense Secretary Mark Esper in Guam. The trip would be Kono's first overseas in about six months.
Japan's defense white paper warns that the coronavirus pandemic may expose competition among countries seeking to expand their influence.
The annual report was presented at a Cabinet meeting on Tuesday. It says China has been making "propaganda efforts" amid growing social uncertainty and confusion caused by the spread of infections.
Japan's defense minister says changes in the country's defense guidelines are possible, following the government's decision to suspend a plan to deploy the land-based Aegis Ashore missile defense system.
Kono Taro said at a news conference on Friday that the government's decision to halt the plan will influence the country's national security strategy.
The Defense Ministry has launched an environmental survey on an island in southwestern Japan where it plans to relocate US military exercises.
About 20 people, including ministry officials, arrived at Mageshima island in Nishinoomote city, Kagoshima prefecture, on Tuesday morning. The ministry says they will first study the island's wildlife and vegetation.
Japan's defense minister has decided to hold a meeting with defense chiefs from Pacific island nations in connection with China's growing maritime presence in the region.
The ministry is to invite officials, including the defense ministers of Papua New Guinea, Fiji, and Tonga, to the conference in Tokyo in April. Invitations are expected to extend to representatives of the United States, Australia, and France.
A senior US State Department official says the US government plans to discuss with Japan how to share overall defense responsibilities, in addition to the cost of keeping US troops in the country.
The current five-year agreement on the cost of stationing US forces in Japan will expire in March 2021. President Donald Trump's administration has asked Japan to significantly increase its share of the burden.