> The same security concerns that America would face under similar circumstances as described
The fact that Russia cannot "make friends" without stepping on their throat explain how they think Mexico could entertain something as having a Chinese base on it and their corresponding reaction. It's how bullies justify their behaviour.
> This is a gross extrapolation
It is what is happening right now. In the same way the discourse last week was "Russia would not invade" and "they are mere military exercises in Belarus"