Irbil could have fallen , '' Kerry said In an exclusive interview with CNN 's Christiane Amanpour . Kerry : The United States is not going to be the world's policeman. Secretary of State John Kerry echoes the President , saying defeating ISIS will take time . Kerry could not confirm that a leader in the Khorasan Group was killed . Kerry and Obama are in New York for the United Nations General Assembly meeting .
Kerry : The United States is not going to be the world's policeman. Secretary of State John Kerry echoes the President , saying defeating ISIS will take time . Kerry could not confirm that a leader in the Khorasan Group was killed . Kerry and Obama are in New York for the United Nations General Assembly meeting .