As his time in office winds down, President Obama has sought to jettison vestiges of the Cold War and reach out to old rivals, from Vietnam to Cuba and beyond.
In Quang Tri province, the most heavily bombed during the Vietnam War, 10 percent of the ordnance never detonated. A former U.S. military intelligence analyst is part of a group cleaning up the bombs.
Award-winning poet Ocean Vuong speaks about his new book Night Sky with Exit Wounds, which weaves growing up in America with his family's memories of a war-torn Vietnam.
Hanoi and Washington hope to strengthen economic and defense ties, especially in the wake of Beijing's construction on a disputed reef in the South China Sea.
In just 18 months, China has created more than 2,000 acres of new land where before there were just waves and reef, according to the U.S., which sees the work as a threat to regional stability.
Forty years ago, Viet Luong was a 9-year-old Vietnamese boy fleeing Saigon with his family. Today he's the first Vietnamese-American general in the U.S. Army and is helping train the Afghan military.
U.S. Marines were deployed to the coastal Vietnamese city 50 years ago last month. Now, 40 years after the war's end and amid great change, former Viet Cong and an American reflect on that time.