Former US President Barack Obama has announced his endorsement of Joe Biden for president in a video message published on Twitter.
He said Mr. Biden, who was his vice-president, could unify and "heal" a nation struggling through some of its darkest moments.
"Choosing Joe as my vice-president was the best decision I ever made and he became a close friend. And I believe Joe has all the qualities we need in a president right now. He's someone whose own life has taught him how to persevere, how to bounce back when you've been knocked down," said Mr. Obama.
Also Read:
On Tuesday, Bernie Sanders endorsed Mr. Biden for the Democratic Party nomination after quitting his race for the White House last week.