WASHINGTON — More joint patrols can be expected in the South China Sea after drills by the United States, Australia, the Philippines and Japan last weekend, US national security adviser Jake Sullivan said on April 9, ahead of US summits this week with the Japanese and Philippine leaders.
Warships from the four nations staged the exercises on April 7 following stepped up Chinese pressure on the Philippines in the disputed strategic waterway.
US President Joe Biden hosts Japanese Prime Minister Fumio Kishida in Washington on April 10 and the two and Philippines President Ferdinand Marcos will meet on April 11 for talks that will include ways to push back against China.
"On the naval patrols, we just saw trilateral plus Australia, a new form of quadrilateral joint naval patrols last week, so you can expect to see more of that in the future," Sullivan told a regular White House briefing while previewing the summits.
Sullivan also said Washington and its existing Australian and British partners in the Aukus security pact would explore possible Japanese involvement in Pillar II of the project, something the Biden-Kishida summit would address.
"We're prepared to work with additional partners beyond the three of us, where they can bring capabilities, and Japan is one of the countries that could very well bring capabilities to that," Sullivan said.
"Japan could be a critical contributor," he said. "You will see when they speak tomorrow, an indication that that's the direction we're moving in."
Sullivan said Biden and Kishida would announce measures to enhance defence and security cooperation and in space exploration.
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In an interview with Japan's NHK World Television conducted on April 8, Sullivan addressed plans for a new Japanese Self Defence Forces (SDF) headquarters overseeing all of the country's military operations that Kishida wants to establish by the end of March 2025.
Sullivan said Biden would give Kishida a “complete commitment... to match Japan’s upgrade of its own operational command, with an upgrade of our operational command”.
Sources with knowledge of the planning have told Reuters Washington will consider appointing a four-star commander for Japan to match the rank of the head of Japan's new military headquarters. Experts say a US officer of that rank could lay the groundwork for a future unified Japanese-US command.
Sullivan said the specifics still had to be worked out, “but the overall strategic direction is clear”.
He said the aim would be to enable the two countries to “work together more effectively, jointly against all of the common challenges that we face in the security realm in the Indo-Pacific”.
"We are prepared as Japan is to take a step forward in enhancing our operational command in Japan and in making sure that we're integrating our operational command with Japan's because we have to be able to work jointly in a world of dynamic threats and challenges in a region of dynamic threats and challenge."
He told NHK the space discussions would cover "our shared desire to return to the moon."
Japan is hoping to land its first astronaut on the moon with the US Artemis project that envisages returning humans there by 2026, as competition with Russia and China intensifies.
Australia on April 9 played down reports Japan could soon join Aukus, saying any cooperation would be on a project-by-project basis as differences emerged within the pact over adding new members.
A Japanese government official told Reuters on April 8 discussions about formally joining Aukus would likely not be welcomed by Australia or UK until they had concrete results from the pact.
While Washington is keen on Japanese involvement, US officials and experts say obstacles remain given the need for Tokyo to introduce better cyber defences and stricter rules for guarding secrets.
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