Delmer talked about Agent Orange, the defoliant that rained down on the jungle from U.S. planes.

CNN: A daughter faces demons of father's war

Vietnamese victims of Agent Orange, a poisonous defoliant used by America in the war, are still seeking compensation.

ECONOMIST: Vietnam and America

You can't put defoliant on the poppies or you've already made new insurgents because they have nothing else to grow.

NPR: Clashes Increase Ahead of Afghan Elections

Mr Parra thinks this may reflect Dow's memory of the way the American government left it to pick up the legal fallout from the use of the notorious Agent Orange defoliant during the Vietnam war.

ECONOMIST: Colombia

He just briefly ran through some of the themes, from a growing trade relationship to the joint search for Americans missing in Vietnam and the long-term effects of America's use of the defoliant Agent Orange in the war.

NPR: Bush, Triet Talk Trade, Human Rights

The word gained an airing across the world 40 years ago, at the first UN environment summit in Stockholm, when Sweden's Prime Minister Olof Palme levelled the charge against the US over its use of defoliant chemicals during the war in Vietnam.

BBC: Ecocide: A legal green high?