I kindly ask you to explain how you would deescalate this situation

So you want them to escalate the situation further and start WW3?

According to this Interview from 2021 costs are ultimately expected to be roughly the same. Also it can be argued that having Support and security patches for the Software is more or less required by law if you intend to use it in (German) public Service.

Friendly reminder that it is still very much legal to use (non deadly) chemical weapons on a states own citizens though.