China x Japan military clash before 2027?

Fighter jets are locking weapons-targeting radar on each other over the East China Sea while prediction markets shrug and price the odds of actual war as a distant tail risk. That gap between the intensity of daily incidents and the calm of the contract price is the entire story. Japan and China are no longer testing each other's patience from a distance. Chinese J-15s have locked fire-control radar on Japanese F-15s near Okinawa, Tokyo has summoned Beijing's ambassador in protest, and joint Chinese-Russian bomber patrols keep triggering Japanese scrambles near contested airspace and exclusive economic zones. Prime Minister Sanae Takaichi has openly tied a Taiwan contingency to potential Self-Defense Forces involvement, a statement Beijing reads as confirmation of Japanese remilitarization. The market's low pricing reflects a structural bet, not complacency: neither government wants a shooting war, and deep economic interdependence plus the US-Japan alliance's deterrent weight still make deliberate escalation irrational for both sides. What the contract is really pricing is accident risk, not intent — near-misses between larger, more frequently colliding forces operating on hair-trigger assumptions about the other's intentions. The counterargument is that this is precisely the environment historically responsible for wars nobody planned. Radar locks and airspace intrusions are not abstractions; they are the raw material of miscalculation, where one commander's defensive reflex reads as the opening move to the other side. The more these incidents accumulate, the less the "nobody wants war" logic controls the outcome. If an incident escalates into a limited kinetic exchange, the second-order shock extends well past Tokyo and Beijing — it forces the United States into immediate alliance-obligation decisions, spikes global shipping and semiconductor supply risk given the region's centrality to Taiwan-adjacent trade routes, and could reprice defense and energy markets across Asia within days. Bottom line: watch for any Japanese Self-Defense Forces engagement rules change explicitly tied to a Taiwan contingency — a shift there would signal Tokyo moving from deterrence posture to active contingency planning, pushing probability meaningfully toward YES rather than the current base case of tense but contained rivalry.