Vice President Joe Biden is casting Donald Trump as too dangerous to trust with the presidency.
Biden says "no major party nominee in the history of this nation has ever known less or been less prepared to deal with our national security."
The vice president tells the Democratic National Convention that Trump - the GOP presidential nominee - offers policies that are more in line with the United States' adversaries.
Biden says Trump backs "torture" and "religious intolerance." Biden says that "betrays our values" and makes it harder for the United States to defeat Islamic State militants.
He is skewering Trump for suggesting he represents the middle class.
Biden says the billionaire real estate mogul "has no clue about what makes America great."
The vice president is telling the Democratic National Convention in Philadelphia that he's known as "middle-class Joe" in the nation's capital - and he says that's not a compliment.
He says it actually means ... "you're not sophisticated."
Biden says Trump isn't actually a friend to the middle class, but instead is a wealthy man who "doesn't have a clue" about middle America.