The US-Japan Security Alliance Is Growing More Integrated

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Although Ishiba's rhetoric implies that under his leadership Japan might be less reliant on Washington, the United States will obviously remain its most vital ally on the international stage. Tellingly, among the first things Ishiba did after taking office was to have a telephone conversation with US President Joe Biden.

Ishiba assure his American counterpart of his intention to fortify the partnership between the two nations, which had already been considerably strengthened during his predecessor Kishida's tenure.

Indeed, the US-Japan alliance has come a long way, starting from the 1951 U.S.-Japan Mutual Security Treaty that allowed the American military bases to remain in the East Asian country. Later, the document was revised , granting the United States the right to base troops in Japan in exchange for Washington's commitment to defend the nation against any armed attack.

However, it's only relatively recently that Tokyo has significantly increased its contribution to the alliance.

“The process started when Mr Shinzo Abe became prime minister for the second time in 2012,” said Kunihiko Miyake , a visiting professor at Kyoto's Ritsumeikan University.

Abe“decided to upgrade our national security policy and change the interpretation of the constitution so that Japan could to a certain extent use force against adversaries to defend Americans,” the expert told this author.“This is a very important change of constitutional interpretation of Article Nine, although, even with that interpretation, our right to collective self-defense is still limited. Not a full-fledged one like a NATO kind of collective defense obligation,” Miyake added.

“But that was a great leap,” he stressed.“And then Mr Abe revised the important, what we call, three national security-related documents. We revised them so that we would have a strike capability to defend our country. Also, we decided to set up joint headquarters inside the Japanese Self-Defense Forces. And, independently, the United States will establish command headquarters in Tokyo so that we would be able to fight together more smoothly than before.”

Following high-level meetings held in Tokyo this July, US Secretary of Defense Lloyd J Austin III announced that US Forces Japan would be upgraded to a joint force headquarters while obtaining greater responsibilities. Calling it a“historic decision,” the American official stressed that the move was among“the strongest improvements” in the countries' military partnership in 70 years.

Emerging as a regional military power

These measures, primarily the modernization of command and control, mean that the US-Japan alliance is growing more integrated.

“What is most important is not the rhetoric or spirit but the ability to show our neighbors that we can fight, if necessary, together with Americans to deter whatever contingencies in our neighborhood,” Miyake said.“South Koreans are fully aware of that now, and we have improved our relationship with them thanks to the US president. A tripartite summit in Camp David last year was pretty successful.”

Now that Japan's role in global security is rising, Tokyo is ramping up the country's defense budget.

“We have decided to increase the amount of defense spending up to 2% of the GDP, which used to be around 1%. All in all, the process has already begun. It takes time – usually, five to 10 years – but it is extremely important that we have started doing it,” the expert added.