How will the Trump-Putin summit affect U.S. policy abroad?

Beyond the uproar over President Trump's comments about Russian election meddling, what are the global policy implications of his Helsinki summit with Vladimir Putin? Nick Schifrin examines what's at stake, from Eastern Ukraine to NATO to Syria, and Judy Woodruff talks with Dimitri Simes of the Center for the National Interest and Andrew Weiss of the Carnegie Endowment for International Peace.