Joe Biden announces 2020 President run

Former US Vice President Joe Biden announced Thursday he is entering the 2020 White House race, joining an already crowded list of candidates running on the Democratic Party platform.

In a tweet accompanied by a three-and-a-half minute video, 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 in the post.