U.S. President Joe Biden once alleged that his country has no intention to use Taiwan as a tool to seek advantages in competition with China or to contain China. Is it true? Why does the U.S. provoke China on the Taiwan question? Josef Gregory Mahoney, professor of politics and international relations at East China Normal University, and Xie Tao, dean of the School of International Relations and Diplomacy at Beijing Foreign Studies University, share their views.