A U.S. military policeman stands in front of Air Force fighter jets that were part of a NATO show of strength in Romania in April intended to deter Russian intervention in Ukraine. Andreea Alexandru/AP hide caption
Leon Panetta
Then-Army Gen. David Petraeus (left) and Marine Corps Gen. John Allen in August, 2011. Chip Somodevilla/Getty Images hide caption
U.S. Secretary of Defense Leon Panetta is given a traditional Maori welcome onto the grounds of the Government House on Friday in Auckland, New Zealand. Phil Walter/Getty Images hide caption
Defense Secretary Leon Panetta earlier today in Kabul. Shah Marai /AFP/Getty Images hide caption
Iran's Supreme Leader Ayatollah Ali Khamenei in 2009. Behrouz Mehri /AFP/Getty Images hide caption
The American flag, Iraqi flag, and the U.S. Forces Iraq colors are carried during ceremonies in Baghdad today marking the end of the U.S. military mission in Iraq. Pablo Martinez Monsivais/pool/AP hide caption
Kelly McEvers speaks with Renee Montagne from Baghdad
Ari Shapiro on 'Morning Edition'
Ryan Crocker, when he was ambassador to Iraq, in Baghdad on Nov. 5, 2008. Ceerwan Aziz/Pool/Getty Images hide caption