And then we likely have a pure dictatorship with the worlds second biggest nuclear arsenal and thousands of Russians will likely die from things like starvation

And then we likely have a pure dictatorship with the worlds second biggest nuclear arsenal and thousands of Russians will likely die from things like starvation and being killed by the new regime (or the old while it dies). No-one wins by killing off a regime. That is "let's bomb this country into democracy" thinking.