China is ratcheting up the risk of military confrontation in the Taiwan Strait, as Beijing seeks to deter Taipei from continuing to deepen ties with the U.S. and other like-minded democracies.

People¡¯s Liberation Army aircraft repeatedly breached the median line between Taiwan and the Chinese mainland last week, in the latest of a series of military exercises in the area. The Chinese pilots signaled a willingness to continue the practice, telling Taiwanese personnel who attempted to warn them away that ¡°there is no median line,¡± the Taipei-based China Times newspaper reported Friday, citing unnamed military officials.

The report was widely circulated by Chinese state media, with the PLA¡¯s Eastern Theater Command responding to one post by urging citizens to ¡°discard any illusions and prepare to fight.¡± The PLA Air Force separately released a video Saturday showing H-6 bombers making a simulated strike on a runway that looked similar to one at Anderson Air Force Base on Guam, a key staging area for any U.S. support for Taiwan.