The head of the global
chemical weapons organization on Monday defended the agency's conclusion that poison was used in a high profile attack in
Syria last year, after leaked documents suggested two former employees doubted some of its findings. More than 40 people were killed in the April 7 attack in
Douma, a town on the outskirts of
Damascus that was then held by rebels. The
United States,
Britain and
France retaliated a week later by firing missiles at Syrian government targets, the biggest Western military action against the Damascus authorities of the eight year war.