Debate: Is Trump-Putin Summit a "Danger to America" or Crucial Diplomacy Between Nuclear Powers?

As President Trump meets with Russian President Vladimir Putin in Helsinki, we host a debate on U.S.-Russia relations. In Washington, D.C., we speak with Joe Cirincione, president of Ploughshares Fund, a global security foundation. In Rio de Janeiro, Brazil, we speak with Glenn Greenwald, Pulitzer Prize-winning journalist and one of the founding editors of The Intercept. Greenwald calls the Trump-Putin meeting "excellent" and adds that President Obama also sought diplomacy with Russia. Cirincione calls the summit "a danger to America and to the West."