U.S.: Joe Biden withdraws from presidential race

U.S. president Joe Biden withdrew from the race for the U.S. presidency, an extraordinary decision that plunges the democratic nomination into uncertainty just months before the November election against Donald Trump. A disastrous debate performance last month, and his uneven public appearances since, have only exacerbated longstanding voter concerns that the 81-year-old president was simply too old to serve another four years.