Biden's aim to restore U.S. leadership could be tall order in a changed world

FILE PHOTO: U.S. President-elect Joe Biden announces his national security nominees and appointees at his transition headquarters in Wilmington, Delaware, U.S., November 24, 2020. REUTERS/Joshua Roberts

WILMINGTON, Del. (Reuters) - President-Elect Joe Biden faces a challenging task fulfilling his foreign policy vision of the United States reclaiming its global leadership role after years in which the country stepped back and rival powers like China stepped in.

Introducing his national security team that includes veteran diplomats, Biden and his nominees on Tuesday emphasized working to strengthen alliances and multilateralism, ideas that fell out of favor during the "America First" approach of Republican President Donald Trump.