Dear Mr Putin,
Placing a bomb on a Russian airliner is an act of terrorism. Shooting down a Russian bomber simply because it – probably inadvertantly – crossed what appears to be a 30 mile-wide kink in the border between Turkish and Syrian airspace is not terrorism, or a stab in your back, it is stupidity. What should have simply led to a diplomatic incident has been escalated unnecesarily. God help us if people like that ever get their hands on a nuclear button.