Any evidence that a cigarette ever brought down a commercial airliner?

Is it just me, or does anyone else think that listing a cigarette in a waste basket as a “possible” cause is not a “clear cut” example of a fire caused by a cigarette?

Who in the (first) world is still has an airworthy 707? The only one I know of is the restored Qantas 707 operated by John Travolta.

What’s the weather like in Iran these days?