To be fair, I think it's moot either way because the Russians aren't (as far as I'm aware) sending manned aircraft into Ukraine in volume any more (probably in no small part due to PAC-3s but also the MANPAD threat). Instead, they're lobbing missiles from Russian airspace or sending in low-cost drones.

> To be clear, I'm not saying it would be politically easy or low risk.

Agreed, I think the biggest issue is the political and strategic risk. In the early days of the war, there was a lot of "it worked for Iraq, just set up a no-fly" chat though.