shocking use of chemical weapons

"The use of chemical weapons in Syria has outraged the world. But it is easy to forget that Britain has used them – and that Winston Churchill was a powerful advocate for them" "The British were no strangers to the use of chemical weapons. During the third battle of Gaza in 1917, General Edmund Allenby had fired 10,000 cans of asphyxiating gas at enemy positions, to limited effect." "He [Churchill] also wanted to use M Devices against the rebellious tribes of northern India. "I am strongly in favour of using poisoned gas against uncivilised tribes," he declared in one secret memorandum."