SEOUL, South Korea — Vessels and crews from the four “Quad” nations — Australia, India, Japan and the United States — on Thursday launched naval drills that will run through Nov. 12 in waters off Tokyo.
The “Malabar” drills, which will exercise frigates from Australia, India and Japan, as well as a U.S. amphibious transport dock vessel, will focus on surface and submarine threats.
“The security environment in the Indo-Pacific region is becoming increasingly complex,” Vice Adm. Katsushi Omachi, commander of Japan’s Self-Defense Fleet, said Thursday, Japanese media reported. “Cooperation with like-minded countries is more important than ever.”
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Adm. Omachi did not identify any of the countries that are adding to the “increasingly complex” regional security situation. What is clear is that more powerful authoritarian forces are massed in the Indo-Pacific than in any other region.
North Korea is upgrading its conventional forces and weapons of mass destruction, but has undertaken no significant military cooperation in the region.
However, Pyongyang has amassed economic benefits, military technology and combat experience as a result of its alliance with Russia, now engaged in the fourth year of its war against Ukraine.
Moscow maintains a range of assets, both strategic and tactical, in the Russian Far East, but its forces — including crack naval infantry units based in Vladivostok — have suffered serious attrition at the hands of Kyiv’s troops since 2022.
Even so, Russia has undertaken joint regional exercises with China, largely in the aerial and maritime domains.
It is China that is the “pacing threat” for the United States, which worries many of its democratic allies and partners in the region.
Beijing’s sophisticated and well-armed forces are increasing their assertiveness in the high Himalayas, the South China Sea, the Philippine littoral and the skies and seas around Taiwan. They are also expanding their presence in the Indian Ocean and the blue-water Pacific.
U.S. military and intelligence sources have claimed that 2027 is the year Chinese President Xi Jinping has ordered his military to be capable of invading democratic Taiwan. The People’s Liberation Army and Navy have been upgrading “jointness” with marine and airborne training, and the PLAN operates a range of amphibious naval assets.
However, the overall PLA has suffered from a purge of its top generals and is undergoing a lower-rank austerity drive.
With no overarching “Asian NATO” uniting regional democracies under U.S. leadership, how Washington can deter these threats is an open question.
One plus: A web of alliances and partnerships is in play across the Indo-Pacific.
The United States is leveraging its separate bilateral treaties with Australia, Japan, the Philippines and South Korea by bringing different national forces together in various regional exercises.
In recent years, trilateral aerial and maritime exercises have been initiated involving Japanese, South Korean and U.S. forces. So, too, have cross-domain exercises involving Australian, Japanese and Philippine forces on Philippine soil.
The “Quad,” short for “The Quadrilateral Security Dialogue,” is not a per se alliance. It was established as a security grouping of regional democracies in 2007 at the suggestion of then-Japanese Prime Minister Shinzo Abe, collapsed in 2008, then brought back to life in 2017.
But there are limitations as to what can be achieved. A retired Indian admiral dismissed the Quad’s security efficacy because it does not unite its members under a mutual defense treaty.

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