China also staged war games near Taiwan in August following a visit to Taipei by U.S. House Speaker Nancy Pelosi."China's various unilateral behaviours have become a major concern for regional security," said the official, who took part in the high-level security discussion.Conscripts would be tasked with guarding key infrastructure, enabling regular forces to respond more swiftly in the event of any attempt by China to invade, the defence ministry said at the same press conference.China's growing assertiveness towards the island it claims as its own, as well as the war in Ukraine have prompted debate within Taiwan about how to boost defence.Tsai said "a few things" had been learned from that war which have been incorporated into Taiwan's defence reforms, and noted that Ukraine's ability to hold off much larger Russian forces had given the international community time to render assistance."