Trainees at terrorist camps in Afghanistan learned how to assassinate, commit sabotage, unleash poisons and build explosives, a convicted terrorist collaborator testified in chilling testimony two months ago.

Ahmed Ressam told a court in July that his training for chemical attacks included watching his ``chief'' place a dog in a box and lace the box with cyanide and sulfuric acid.

It took the dog about four minutes to die, Ressam testified.

``We wanted to know what is the effect of the gas,'' Ressam told the court. ``In regard to targets in general, yes. Yes, we were speaking about America as an enemy of Islam.