fareed zakaria gps is next. >> welcome to all of you in the united states and around a i'm fareed zakaria . it has been an extraordinary six days since two bombs exploded near the finish line of the boston marathon. today the lone surviving suspect in that attack lies in a hospital bed, unable to speak, unable to explain the destruction he and his brother are alleged to have wrought. in this hour, we will try to get to the bottom of the key issues around the attack. we'll start with an exclusive interview with ray kelly, the commissioner of the new york police department. he runs one of the largest