It's been a busy week for the Secretary of Defense. Three days ago he was in Djibouti, in the Horn of Africa. He then moved on to Kabul where he presented Purple Hearts to members of the armed forces, and yesterday he took part in the ceremony in Baghdad marking the end of the U.S. military's mission in Iraq. Today he is in the Turkish capital, and he is also due to visit Libya on what The Associated Press described as his "holiday tour".
Photographer Pablo Martinez Monsivais has been with him every step of the way as part of the media pool covering the trip. Click on the links above to see more of Monsivais' excellent work.