— Drone strikes you’ve ordered against targets in Pakistan have killed, by some estimates, several hundred innocent civilians, including many children. Is this a moral strategy to defeat terrorists?

— You intervened to stop civilian massacres in Libya, where no U.S. national security interest was at stake. In Syria, far more people have been killed by their government, and U.S. interests are clearly at stake. America’s Muslim allies, including Turkey, are asking the U.S. to do more to bring an end to Bashar al-Assad’s regime. Why have you stayed on the sidelines?

— Arab liberals in Egypt and elsewhere believe the U.S. has abandoned the cause of spreading American-style freedom in the Middle East and is coddling the Muslim Brotherhood. Is Muslim Brotherhood ideology dangerous to the U.S.?

— Who will maintain global security if the U.S. Navy and Army continue to shrink?