China-Japan Security Pulse

Japan–US BMD/missile acceleration (ASEV/GPI; Typhon; Golden Dome)

Japan–US BMD/missile acceleration (ASEV/GPI; Typhon; Golden Dome)

Key Questions

What is the Typhon MRBM system and where is it being deployed?

The Typhon is a US medium-range ballistic missile system. The US has confirmed its permanent storage at Kanoya base in Japan following joint drills.

What missile production discussions are underway between Japan and the US?

Japan and the US are discussing increased production of SM-3 and PAC-3 missiles to strengthen ballistic missile defense cooperation.

How does this relate to Japan's defense spending goals?

Discussions include raising Japan's BMD spending above 2% of GDP as part of enhanced alliance capabilities.

What is Anpo3 and why are revisions advancing?

Anpo3 refers to the US-Japan security treaty framework. Revisions are progressing amid concerns over alliance reliability and regional tensions.

How has Japanese media reacted to these developments?

Some Japanese outlets express concerns that Japan might not receive timely US support in a conflict with China, questioning alliance dependability.

What is China's position on US missile deployments in Japan?

China has strongly opposed the deployments, urging the US and Japan to correct their actions and warning against 'new militarism'.

How does the Trump-Xi summit context affect these moves?

The deployments occur against the backdrop of Trump-Xi optics, with alliance reliability concerns highlighted in Japanese reporting.

What is the 'Golden Dome' referenced in the highlight?

It refers to enhanced US-Japan ballistic missile defense initiatives, including ASEV and GPI programs, to counter regional threats.

US confirms Typhon MRBM permanent storage at Kanoya after drills. JP-US discuss SM-3/PAC-3 production and >2% GDP BMD; Anpo3 revisions advance amid Trump-Xi optics and alliance reliability concerns from JP media.

Sources (45)
Updated May 23, 2026