Are the Russians behind Clinton, DCCC cyberhacks?

Clinton’s campaign and the Democratic Congressional Campaign Committee have been cyber hacked. Sources told the NewsHour the DCCC hacker is the same as one that hit the Democratic National Committee. U.S. intel officials believe they’re Russian. Judy Woodruff talks with Susan Hennessey of the Brookings Institution and Andrew Weiss, of the Carnegie Endowment for International Peace for insight.