Biden's New Global Agenda

President Joe Biden, accompanied by Vice President Kamala Harris, right, and Attorney General Merrick Garland, left, departs after speaking about gun violence prevention in the Rose Garden.

President Biden announced he will withdraw all U.S. troops from Afghanistan by or before September 11, the 20th anniversary of the 2001 terrorist attacks. David SangerWhite House and national security correspondent for The New York Times, talks about how world leaders and national security experts are reacting to the news.