Secretary Rumsfeld and Singapore's Minister of Defense Teo Chee Hean sign a Protocol of Amendments. Secretary of Defense Donald H. Rumsfeld (right) and Singapore's Minister of Defense Teo Chee Hean (left) sign a Protocol of Amendments to the 1990 Memorandum of Understanding between the U.S. and the Republic of Singapore in the Pentagon on July 12, 2005. Prime Minister Lee Hsien Loong (far left) observed the signing. SHARE IMAGE: Download Image: Full Size (0.05 MB) Photo By: VIRIN: 124193-A-SLL53-087.jpg Photo Gallery