Biden steps into global spotlight at U.N. seeking to repair strained alliances

President Joe Biden will use his biggest moment so far on the international stage at the United Nations General Assembly on Tuesday to defend his decision to pull troops from Afghanistan, and seek to re-establish America’s alliances and role in the international community.

The speech will be his first as president at the meeting, which will look much different from past gatherings with many world leaders opting to deliver their remarks virtually. Biden will also meet Tuesday with Australian Prime Minister Scott Morrison in New York and with British Prime Minister Boris Johnson in the evening back...