President Joe Biden announced his decision to not seek re-election in a televised address, citing the need to pass the torch to a new generation.
He endorsed Vice President Kamala Harris as his successor, aiming to unite fellow Democrats and the country.
Biden's speech marked his first public appearance since exiting the race, paving the way for Harris to run for the Democratic nomination.
The Republican presidential candidate, Donald Trump, reacted to the news by attacking Ms. Harris, calling her a "radical left lunatic".
