A US-based political analyst says the deadly drone strike on US troops in Jordan "makes a military confrontation with Iran more likely." "It's very difficult for me to see how any US president, be the president a Democrat or Republican, can stand by and allow an unprovoked attack against US military personnel in a third country to go unpunished," says Gordon Gray, Kuwait Professor of Gulf and Arabian Peninsula Affairs at the Elliott School of International Affairs at George Washington University. "My guess is that the retaliatory attack would be against a military or IRGC (Islamic Revolutionary Guard Corps, ed) target inside Iran, proper," adds the former US Ambassador to Tunisia. IMAGES AND SOUNDBITES