Man On A Mission

Actor George Clooney, second left, signs autographs for United Nations employees at United Nations headquarters where he was designated U.N. Messenger of Peace, Thursday, Jan. 31, 2008.

Actor George Clooney poses for pictures with a certificate that honors his new role a United Nations Messenger of Peace at U.N. headquarters, Thursday, Jan. 31, 2008. Clooney said he plans to focus his attention on Darfur and other spots he knows best, but has ambitions to travel broadly in his U.N. role.

Proud parents Nick and Nina Clooney, left, look on as Deputy Secretary-General Dr. Asha-Rose Migiro, right, presents their son George Clooney with a certificate to honor his new role as a United Nations Messenger of Peace at U.N. headquarters, Thursday, Jan. 31, 2008.

Actor George Clooney is shown during a news conference held at United Nations headquarters where he was designated U.N. Messenger of Peace, Thursday, Jan. 31, 2008. As the ninth U.N. peace envoy, the Oscar winner was selected for his ability to focus public attention on critical international political and social issues. He told reporters it was a tremendous honor for him.

Actor George Clooney, left, walks with his cousin, David Pressman, as he exits an interview at United Nations headquarters where he was designated U.N. Messenger of Peace, Thursday, Jan. 31, 2008. In December, Clooney and actor Don Cheadle were honored by Nobel peace laureates for their Darfur efforts.

Actor and new United Nations Messenger of Peace George Clooney listens to a question from the media about his recent trip to Darfur at United Nations headquarters, Thursday, Jan. 31, 2008. Clooney took on the job of promoting the world body's peacekeeping missions after waging his own campaigns for an end to the 4 1/2-year war in Darfur and for more humanitarian aid for the millions caught up in the conflict.

Actor and new United Nations Messenger of Peace George Clooney speaks to the media about his recent trip to Darfur at United Nations headquarters, Thursday, Jan. 31, 2008. "I am very proud to be here as a messenger of peace, and the message is: That the world is watching, and that at this point we cannot afford to fail," he said.

Actor and new United Nations Messenger of Peace George Clooney speaks to the media about his recent trip to Darfur at United Nations headquarters, Thursday, Jan. 31, 2008. Other messengers of peace are Michael Douglas, Elie Wiesel, Jane Goodall, Yo-Yo Ma, Daniel Barenboim, Paulo Coelho, Midori Goto and Princess Haya of Jordan.

Actor and new United Nations Messenger of Peace George Clooney listens to a question from the media about his recent trip to Darfur at United Nations headquarters, Thursday, Jan. 31, 2008. He was just back from a two-week trip to Sudan's Darfur region, arriving in the U.S. by way of India, a major contributor of U.N. peacekeeping troops.

In this photo released by the United Nations and African Mission in Darfur (UNAMID), actor George Clooney, who was recently designated as a U.N. messenger of peace, center, attends a meeting with delegates from Darfur's civil society at an unspecified date in late January 2008, in El Fasher, North Darfur, Sudan.

In this undated photo released by the United Nations and African Mission to Darfur (UNAMID), U.S. actor George Clooney, center, who was recently designated as a U.N. messenger of peace, visits the Zamzam refugee camp in North Darfur, Sudan, in late Jan. 2008.

In this photo released by the United Nations and African Mission to Darfur (UNAMID), actor George Clooney, right, talks with a delegate from Darfur's civil society, left, during a meeting in El Fasher, North Darfur, Sudan, in late Jan. 2008. It was his first trip month as a U.N. messenger of peace.

Actor George Clooney, center, who has been designated as U.N. messenger of peace by U.N. Secretary General Ban Ki-Moon, visits the Zamzam refugee camp in North Darfur, Sudan, in late January 2008. Clooney just returned from a two-week trip to 19 locations in Sudan's Darfur region, the Central African Republic, Chad and the Democratic Republic of Congo.