Chinese military activity around Taiwan has fallen to its lowest level in years even as the long-feared 2027 "Davidson Window" approaches, and Taiwanese intelligence believes it knows why: the People's Liberation Army is redirecting its main naval and air forces toward Japan, in what may signal a fundamental rethink of Beijing's strategy for taking the island.
Taiwan's Ministry of National Defense detected just 208 PLA aircraft sorties around the island in June 2026 — a roughly 60% drop from the 499 recorded in June 2025. Crossings of the Taiwan Strait median line fell to a new low of 36 for the month, and, unusually, no Chinese bomber activity was observed in the surrounding airspace at all. Across the first half of 2026, monthly incursions averaged nearly half the levels seen during the peaks of 2024 and 2025.
The lull is striking given the calendar. In 2021, then-Commander of US Indo-Pacific Command Admiral Philip Davidson warned that the PLA would be capable of attacking Taiwan within six years, making 2027 a widely watched benchmark for a potential cross-strait showdown. The Economist, which in 2021 famously labeled Taiwan "the most dangerous place on Earth," still ranked the Taiwan Strait first among global conflict flashpoints in early 2026.
PLA Eastern Theater Command Redeploys Toward East China Sea
Taiwan's military and national security agencies caution against reading the drop as genuine de-escalation, noting it may partly reflect internal anti-corruption purges within the PLA, the testing of new tactics, and the routinization of "joint combat readiness patrols." Still, the reduced pressure has given Taiwan's air force a rare chance to rest pilots and service aircraft.
A Taiwanese military source offered a more pointed explanation: the sharp deterioration in China-Japan relations. According to the source, the PLA's Eastern Theater Command has moved the bulk of its naval and air power north toward the East China Sea and the edge of the first island chain, training its pressure squarely on the Japan Self-Defense Forces (JSDF) — and significantly raising the risk of an accidental clash between the two militaries.
The confrontation traces back to November 2025, when Japanese Prime Minister Sanae Takaichi (高市早苗) told parliament that a "Taiwan contingency" could constitute a "survival-threatening situation" for Japan — language that, under Japanese security law, could open the door to military intervention. Beijing responded with across-the-board diplomatic, economic, and military pressure. Tokyo, rather than backing down, deepened cooperation with the Philippines, India, and European partners, and began deploying air-defense and long-range anti-ship missiles across its southwestern islands. A Japan Maritime Self-Defense Force destroyer's transit of the Taiwan Strait on April 17 — the anniversary of the 1895 Treaty of Shimonoseki, under which Qing China ceded Taiwan to Japan — was read in Beijing as deliberate provocation.
The PLA's response has been unusually muscular: intensified patrols around the disputed Diaoyutai/Senkaku Islands, a 40-day air restriction zone declared over the East China Sea, frequent carrier and destroyer transits through the Miyako, Osumi, and Tsushima straits, anti-access/area-denial (A2/AD) exercises, and joint "strategic air patrols" flown with the Russian Aerospace Forces near Japanese airspace.
China Outguns Japan's Thinly Defended Southwestern Islands
Taiwanese intelligence assesses that the East China Sea — not the Yellow Sea, which sits too close to the Korean Peninsula and to Japan's home-island forces — is where any clash would most likely occur. Japan's southwestern islands lie far from the mainland and are thinly defended, making them, in Beijing's calculation, Japan's Achilles' heel.
The force imbalance is stark on paper. Japan has stationed roughly 2,000 troops across Amami Oshima, Miyakojima, and Ishigaki islands, equipped with upgraded Type 12 surface-to-ship missiles (extended range of about 1,000 kilometers), Type 03 "Chū-SAM" medium-range surface-to-air missiles, and electronic warfare units, backed by the 3,900-strong 15th Division on Okinawa. Air cover rests on F-15J and F-35A fighters operating from Naha Air Base, with Maya-class Aegis destroyers and Soryu-class diesel-electric submarines with air-independent propulsion (AIP) at sea.
The PLA, fighting close to home with the Eastern Theater Command's far larger inventory, now maintains routine East China Sea patrols by J-16 and J-20/J-20A fighters and KJ-500 airborne early warning and control aircraft, along with long-endurance reconnaissance drones. At sea it can commit Type 055 and Type 052D destroyers — both fitted with China's Aegis-equivalent combat systems — Type 054A frigates, Type 093B nuclear-powered attack submarines, and Type 039 Yuan-class AIP submarines.
A retired Taiwanese air force general noted a critical qualitative gap: Japan's aging F-15Js and its limited F-35A fleet hold no advantage against the J-16 or J-20, and Japan's indigenous Type 99 (AAM-4) and US-made AIM-120C-7 air-to-air missiles — with ranges under 120 kilometers — are badly outranged by the PLA's PL-15, which exceeds 200 kilometers. In an air battle over the East China Sea, the general said, F-35As might escape, but F-15Js would struggle to survive. Japan has responded with its largest and most intensive postwar surveillance operation over the East China Sea, keeping at least one E-767 AWACS or E-2C Hawkeye early-warning aircraft airborne by day and deploying US-made MQ-9B SeaGuardian drones to the southwestern islands.
Beijing Bets US-Japan Security Treaty Won't Cover a Limited Clash
Japan's ultimate backstop is the US-Japan Security Treaty, whose Article 5 obliges Washington to respond to an armed attack on territories under Japanese administration. But according to Taiwanese intelligence, PLA planners believe a limited engagement — shooting down a Japanese drone or fighter over the East China Sea, or paralyzing JSDF radars with electronic warfare — would fall short of that threshold, since no Japanese territory would be struck and Beijing has no intention of occupying Japanese soil.
Chinese planners doubt Washington would risk war with a nuclear power over an "accidental" clash and expect the US would instead mediate diplomatically — an outcome favorable to Beijing, and one that could force Tokyo to reassess its foreign policy after absorbing losses.
China's New Strategy: Strike Japan First to Isolate Taiwan
The most consequential finding in Taiwanese intelligence is a shift in Beijing's strategic logic. For years, allied war games assumed a fixed sequence: a Taiwan contingency triggers a Japan contingency, which activates the US-Japan alliance and brings American forces — operating from bases in Japan — into the fight. That made Japan the indispensable logistics hub for any US defense of Taiwan, especially as Washington disperses assets to the second island chain to hedge against China's medium- and long-range missile threat.
Takaichi's explicit stance, the assessment holds, paradoxically simplified Beijing's problem. Taiwan is territory China claims and its people are cast as compatriots, making heavy strikes politically fraught at home; Japan, burdened by historical enmity, is not. Since 2026, elements within the Chinese party-state and PLA have reportedly gravitated toward the view that engineering a "Japan contingency" first — knocking out the logistics node that makes sustained US operations in the strait possible, and demonstrating to Tokyo the cost of intervention — could leave Taiwan isolated and more willing to negotiate.
If that thinking hardens into approved strategy, the paradox is grim: cross-strait military tension may keep easing, while the East China Sea replaces the Taiwan Strait as the world's most dangerous flashpoint. A quiet strait with Taiwan's allies pinned down elsewhere, Taiwanese officials warn, would be the greater crisis. （Related： Opinion | China's JL-3 Missile Test Reveals the Intelligence-Gathering Hand of Multiple Nations ｜ Latest ）
