Former US Vice President Joe Biden has officially announced that he's entering the 2020 White House race.
He made his announcement in a three-and-a-half minute video posted on Twitter.
Biden said he couldn't stand idly by while US President Donald Trump "fundamentally altered the character of this nation".
"The core values of this nation... our standing in the world... our very democracy... everything that has made America -- America -- is at stake," he wrote.
"That's why today I'm announcing my candidacy for President of the United States."
He joins an already crowded list of candidates running on the Democratic Party platform.

Trump says Iran really wants to make a deal with the US
Kuwaiti forces deal with missile, drone attacks on Monday
US says it struck Iranian drone command sites at weekend
US proposes new plan to ease Israel-Lebanon tensions amid fighting
Five dead, two injured after blast at Hanwha Aerospace plant in South Korea
