Originally Posted by Silent Hunter

OoE is right. Gary Powers was over the USSR when his aircraft was spammed out of the sky by "Guidelines" (I've just got a Osprey book on the SA-2 series and I'm surprised at how many missiles they used per successful downing).

The Tu-95s have entered NATO's Air Defence Identification Zone. That's not illegal at all, provided they're non-hostile.

If they were to enter actual UK airspace, then things would be interesting.