stance against china, one of the few trump-era policies embraced by president joe biden. defending taiwan's democracy against authoritarian china has rare bipartisan support. some worry washington politics may be provoking beijing. even pushing taiwan and the u.s. into dangerous territory. >> if you do take steps to look like you are aggressively defending taiwan, then you arguably put them in a more vulnerable position. you arguably again irritate china. >> reporter: taiwan's president says the island is on the front lines of a much bigger battle. >> free and democratic countries have been alerted to the expansion of authoritarianism and taiwan is on the forefront of the defense line of fellow democracies. >> reporter: china sent a record 150 war planes near taiwan in just five days this month. biden's balancing act calming cross straight tensions, defending democracy and