>Russia flirted with Turkish airspace in 2015; Ankara shot it down [1]. Zero further provocations. You can’t appease a bully by lying prostrate. Even if the bully has big guns at home. We aren’t risking nuclear war by drawing clear lines, we’re inviting it by clumsily blurring them.

Zero further provocations doesn't seem right [1] [2]

[1] https://en.wikipedia.org/wiki/2017_Russian_Air_Force_Al-Bab_... [2] https://en.wikipedia.org/wiki/2020_Balyun_airstrikes