Clinton vows to clear unexploded US bombs in Laos

Decades after the US gave Laos a horrific distinction as the world's most heavily bombed nation per person, Secretary of State Hillary Clinton pledged to help get rid of millions of unexploded bombs that still pockmark the impoverished country - and still kill.

The US dropped more than two million tons of bombs on the North Vietnamese ally during its "secret war" between 1964 and 1973 - about a ton of ordnance for each Laotian man, woman and child.