Japan Security Brief: Keen Sword, China Pressure, Budget
Keen Sword drills start Oct. 19 near Taiwan, China keeps pressing Tokyo, and Japan’s defense request tops $55B. What each source says, and what is unknown.
Japan heads into a busy stretch. Its Ministry of Defense has published the plan for the Keen Sword exercise with U.S. forces, which runs from 19 to 29 October. China is keeping up diplomatic and economic pressure on Tokyo. And a record defense budget request is moving through the Finance Ministry. This brief covers each, with the source for every claim.
Keen Sword: island-defense drills with U.S. forces
Japan will field 45,000 personnel, 6,100 vehicles, 40 vessels and 260 aircraft, according to documents released by the Japan Ministry of Defense and reported by USNI News. The exercise covers air and missile defense, amphibious landings, airborne operations and the reinforcement of islands by sea and air. The drills are led by Adm. Tateki Tawara of Japan Joint Operations Command and Adm. Steve Koehler of U.S. Pacific Fleet.
Australia, Canada, France, Germany, the Netherlands, New Zealand and the Philippines will take part, either as observers or in some drills, the documents show. Most activity is in the southwest island chain, and the air and missile defense and anti-ship drills are not expected to involve live firing, USNI reports.
Two points remain open. Details of U.S. participation have not been released, and USNI says it is unclear whether a U.S. carrier strike group will join, because the George Washington group has been operating in the Middle East since July. The Japan Times reported that U.S. anti-ship missiles are planned for Yonaguni for the first time. We covered that deployment in NMESIS: Marine Anti-Ship Missiles Head to Yonaguni.
China keeps pressing Tokyo over Taiwan and trade
The Institute for the Study of War reports that China’s foreign minister, Wang Yi, told a visiting Japanese trade-promotion delegation that ties are “once again facing a severe situation.” The ISW update of 2 October quotes him saying Japan’s “urgent task is to correct the erroneous words and actions of its leaders on the Taiwan issue.” That refers to Prime Minister Sanae Takaichi’s statement in November 2025 that a Chinese attack on Taiwan could be a “survival-threatening situation” for Japan.
Trade is the sharpest edge. Reuters reported in May, citing Chinese customs data, that exports of dysprosium, terbium and yttrium oxide to Japan had stopped since December apart from a few small shipments of yttrium. In July, Reuters found that more than two-thirds of nearly 200 Japanese corporate filings from May and June that mentioned rare earths said export controls were hurting, or could hurt, their business.
On 8 October the South China Morning Post reported, citing unnamed people familiar with the talks, that President Trump urged Xi Jinping to ease the curbs on Japan at their September summit in Washington. Kyodo relayed the report. The SCMP account says Xi was not receptive and warned of the risk of Japanese militarism. We found no official confirmation of those details, so treat them as a press report.
A record defense budget request
Japan’s Ministry of Defense asked for a record 8.9 trillion yen, about $55.6 billion, for fiscal 2027, according to budget documents summarized by USNI News. Priorities include artificial intelligence, unmanned systems and long-range strike. The Diplomat reports that about 160 entries are “item requests” with no price yet, because the government plans to revise its three main security documents by the end of 2026. The Diplomat adds that the Finance Ministry will decide in late December, and that the final figure is widely expected to exceed 10 trillion yen.
The alliance after the Trump-Xi summit
Before Trump met Xi on 23 to 25 September, Takaichi secured her own meeting with the president. The Diplomat reports she said it is “important that U.S.-China relations contribute to stability in international relations, including between Japan and the United States.” Afterward she posted that Trump had given her a detailed explanation of the summit, and described two leader meetings in one week as a demonstration of the alliance’s strength, The Diplomat says.
What it means
Peter’s World analysis, based on the sources cited in this article.
Tokyo is working on three tracks at once: rehearsing with the U.S. military, spending more on its own forces, and seeking reassurance in Washington while Beijing applies pressure. UPI commentary frames this as Japan building its own capabilities rather than relying only on immediate U.S. support. The rare-earth cutoff shows that China’s leverage reaches Japanese industry, not just its security.
What to watch: U.S. forces named for Keen Sword, any Chinese reaction to the Yonaguni deployment, whether the export curbs are eased, and the December budget decision.
Sources
- USNI News, U.S., Japanese Forces to Rehearse Defense of Japan’s Southwest Islands, 6 October 2026.
- Institute for the Study of War, China & Taiwan Update, October 2, 2026.
- Kyodo News, Trump urged Xi to mend ties with Japan, lift export controls, 8 October 2026.
- USNI News, Japan Budget Requests Record $55.6B for Unmanned, Long Range Strike Capabilities, 1 September 2026.
Additional sources
- The Japan Times: U.S. to put missile system on island near Taiwan for drills, 2 October 2026.
- Reuters: China squeezes Japan over rare earths, 22 May 2026.
- Reuters: Corporate Japan’s rare-earth warnings get louder, 6 July 2026.
- South China Morning Post: Trump urged Xi to talk to Takaichi and lift export curbs on Japan, 8 October 2026.
- The Diplomat: Japan’s record 2027 defense budget request is only the opening bid.
- The Diplomat: The New Nixon Shock? Why Japan fears a Trump-Xi deal.
- UPI: Super realism and allied adaptation, 9 October 2026.
