Watch New Hillary Clinton Ad Slamming 'Volatile' Trump

Hillary Clinton's campaign is out with a new ad slamming Donald Trump's response to Britain's Brexit. "Every president is tested by world events, but Donald Trump thinks about how his golf resort can profit from them," intones the 30-second ad. "In a volatile world, the last thing we need is a volatile president." Clinton herself has yet to respond to the "Brexit" vote on-camera or by phone, although aides say the she would probably address the issue later on Sunday when she returned to the campaign trail.