Army Gen. Martin E. Dempsey, right, chairman of the Joint Chiefs of Staff, speaks with Martha Raddatz, ABC News senior foreign affairs correspondent, during a recorded interview at the Pentagon, Oct. 7, 2014. Dempsey answered questions on topics ranging from the ongoing war against Islamic State of Iraq and the Levant in Syria and Iraq to the U.S. military's role in fighting the Ebola virus outbreak in western Africa.