President Trump announced a preliminary agreement with Iran that would launch 60 days of negotiations toward a final deal. The administration is highlighting the accomplishment as a diplomatic breakthrough. Ian Bremmer, founder of the Eurasia Group, provided analysis on what the U.S. has achieved through its Iran strategy. The preliminary agreement marks a shift in U.S.-Iran relations after months of escalating tensions. Details on the substance of the talks and their likelihood of success remain uncertain.