Indo-Pacific — 2026-05-25

Japan Announces Two Major Western Pacific Exercises with US Including Typhon Missile System Deployment

BLUFKeeping Typhon in Japan after exercises ends the removal precedent set at Iwakuni and quietly converts episodic deployments into a near-permanent forward posture absent a verified mid-October withdrawal.

Japan's Joint Staff Office announced Friday that the JSDF will participate in Valiant Shield 2026 from June 22 to July 1 and Resolute Dragon 26 from June 20 to 30, with exercises spanning Kyushu, the Amami Islands, and Okinawa 12. MOD notification to the Kanoya City Council confirms the U.S. Army's Typhon missile system and HIMARS will deploy to JMSDF Kanoya Air Base in Kagoshima for Valiant Shield and Orient Shield in September, with no live firing planned for either system 13. After both exercises conclude, the systems will be stored at a U.S. military base in Japan rather than removed, unlike the first Typhon deployment to MCAS Iwakuni last September 13. The U.S. Embassy in Moscow characterized the storage arrangement as temporary and not a permanent deployment, stating Typhon will be withdrawn from Kanoya by mid-October 4.

Analysis
Storing Typhon at a Japanese base after Valiant Shield rather than repatriating out of theater, unlike the Iwakuni withdrawal last September, reduces deployment friction and shifts the forward presence baseline in the southwest island chain. Tokyo's consent signals a posture shift that routine exercise participation does not convey, supported by MOD primary sourcing broadly corroborated across defense, regional, and diplomatic channels, yielding moderate reliability. Washington's Embassy messaging to Moscow reflects deliberate escalation management, but Beijing will track the physical posture, not the diplomatic framing. The storage decision may more parsimoniously reflect intra-theater logistics costs than deliberate basing strategy. The mid-October withdrawal deadline is the benchmark. Extension beyond it would confirm persistent forward basing.

4 sources

Japan Announces 2 Major Western Pacific Exercises with U.S. - USNI News
Participation in "Valiant Shield 2026" - Japan Ministry of Defense Joint Staff Office
US to send Typhon, Himars missile systems to Japan for drills amid China tensions - South China Morning Post
Japan, US to deploy Typhon missile system as part of joint maneuvers in summer-fall - TASS