China sharply condemned Trump’s new U.S. national security strategy on Taiwan, warning Washington not to cross what it calls the “first inviolable red line” in bilateral relations. Beijing insists Taiwan is a purely internal matter, vowing to “never flinch” in defending sovereignty. The tensions are not limited to the Taiwan Strait: Beijing has also blasted Japan, accusing its fighter jets of “deliberate intrusion” into Chinese exercise zones and of spreading disinformation after Tokyo said its aircraft were twice targeted by Chinese radar near the Okinawa islands, underscoring a sharper, multi‑front power rivalry in East Asia.