France, Germany, the Netherlands, New Zealand, and the Philippines participated in the Keen Sword joint military exercises for the first time in 2026.

From the articleJapan and the US kick off joint drills around islands as regional tensions riseAlso in Japan and the US kick off joint drills around islands as regional tensions rise, Japan and U.S. kick off one of their largest joint military drills defending Japan's southwestern islands as tensions with China rise | Fortune