Walter Isaacson, president and CEO of the Aspen Institute (L), a member of the U.S.-Vietnam Dialogue Group on Agent Orange/Dioxin talks with Vietnamese diplomat Ton Nu Thi Ninh at a news conference in Hanoi February 1, 2008. Vietnamese military technicians have capped an area of a former U.S. military airport with concrete to stop dioxin or "agent orange" contaminating a lake, part of a joint project to deal with a bitter war legacy. The measures taken in recent months at Danang in central Vietnam were temporary, but an important milestone, a group of prominent Vietnamese and Americans said on Friday. REUTERS/Stringer (VIETNAM)
REUTERS/STRINGER/VIETNAM