Even the BBC acknowledges that hunting helps protect vulnerable species
Elephant populations had benefited from a permit system that allowed sport hunters to kill a limited number of the beasts, according to Eugene Lapointe.
Mr Lapointe was head of the Convention on International Trade in Endangered Species (CITES) between 1982-90.
Animal welfare campaigners rejected the idea as "morally unjustifiable".
Writing in the BBC News website's Green Room, Mr Lapointe, president of the International Wildlife Management Consortium (IWMC), said that despite the best efforts of conservationists, the number of threatened species continued to grow. . . .