On the contrary, it's pretty clear what the red lines of NATO are – the territorial and sovereign integrity of its members (with some complicated bits, like the

On the contrary, it's pretty clear what the red lines of NATO are – the territorial and sovereign integrity of its members (with some complicated bits, like the status of Sweden and Finland). The NATO response has very very much been calibrated for three things: 1. Do not send NATO troops to defend non-NATO members (with caveats, see Sweden/Finland). 2. Damage Putin as much as possible, within the constraints of the previous point, and 3. Try to give Putin a way out (again, complicated because different members have been less confrontational than others, but this has essentially been the theme). I'm sorry, Gary Kasparov might be good at chess, but he does not understand geopolitics.