DAVID MUIR (HOST): Donald Trump tweeting throughout the first night of the Democratic convention, and today, he tweeted this question: Why aren’t the Democrats speaking about ISIS? His running mate, Mike Pence, was asking the same question tonight, and our George Stephanopoulos sat down with the vice president, asking, why aren't the Democrats talking about ISIS?



GEORGE STEPHANOPOULOS: Mike Pence, this morning at the VFW, “It is extraordinary to think that yesterday in Philadelphia, 61 speakers came to the podium and not one of them named ISIS by name. This man, Donald Trump, will name our enemies without apology, and he will defeat them."



JOE BIDEN: How are they going to defeat -- we have the single-most significant homeland security of any country in the world. We have the finest special forces in the world, and what are they doing? Pence and Trump? What they're doing is, they're breaking up our alliances. These guys don't know what they're talking about.

Previously:

On Economic Opportunity Night Of Convention, Right-Wing Media Complain ISIS Not Named