Japan completed its first-ever fighter jet deployment to Canada and Europe on Wednesday in an unprecedented display of support for NATO partner countries as well as a demonstration of the Air Self-Defense Force’s long-distance operational capabilities amid growing concerns over the international security situation.

Named “Atlantic Eagles,” the mission involved four F-15Js from Chitose Air Base, accompanied by two refueling and two transport aircraft from various bases across Japan. The contingent, which also included 180 personnel, first landed at the U.S. Eielson Air Force Base in Alaska. From there, they proceeded to Canadian Forces Base Goose Bay in Canada, RAF Coningsby and RAF Brize Norton in England, and Laage Air Base in Germany.

The ASDF said the Sept. 14 to Oct. 1 deployment was meant to deepen cooperation and exchanges with fighter squadrons from partner countries in North America and Europe. But experts such as Sebastian Maslow, an associate professor at the University of Tokyo, go further, arguing that the move also highlights the growing momentum of Japan’s security cooperation with NATO partners as Tokyo appears increasingly willing to take on a more proactive role in international security affairs.

Atlantic Eagles comes as several NATO member states have increased their own deployments of military assets to Asia, including Japan, particularly after Russia’s invasion of Ukraine in February 2022.

Defense Minister Gen Nakatani highlighted this when talking to reporters ahead of the mission. “In recent years, European countries such as Canada, the United Kingdom, and Germany have been steadily strengthening their engagement in the Indo-Pacific region, regularly dispatching fighter jets and naval vessels to areas surrounding Japan,” he said on Sept. 12.

In this context, the ASDF deployment was meant to embody the “shared recognition that the security of the Euro-Atlantic and the Indo-Pacific regions is inseparable and interrelated,” Nakatani added, as the ASDF gradually expands the scope of its overseas activities.

Japan, which earlier this year launched its first dedicated mission to NATO, already has one of the closest relationships with the Western military alliance among nonmember partner states.

But Japan has been aiming to take things a step further by boosting joint activities and increasing defense-industrial cooperation, with the latest development seen as symbolizing Tokyo’s commitment to strengthening ties with NATO.

The geostrategic rationale behind these steps is to “reinforce deterrence” against China and Russia while offsetting uncertainties over NATO cohesion and U.S.-led security alliances in Asia through the development of new security partnerships, Maslow said.

Another objective, he said, is to signal readiness and resolve as the scope of military cooperation continues to expand and a new security architecture emerges that increasingly connects the European and Indo-Pacific theaters.

The ASDF deployment took place after elements of the U.K. Carrier Strike Group 25, led by the Prince of Wales aircraft carrier, docked in Japan between Aug. 12 and Sept. 2.

The warships’ arrival in Japan had been preceded by naval exercises with the Maritime Self-Defense Force, some of which included the first landing and takeoff of a British F-35B fighter aircraft from a Japanese carrier — a move designed to enhance interoperability, flexibility and operational capacity between the partner navies.