If any of your post #5 is true, God be with the Secret Service detachment working with Obama after January 20. The overall security level will be lower, and despite Obama’s ego, he will be a private citizen then, as well as a softer target.
If Putin takes any action against Obama post-presidency, it will be to humiliate him.
A cursory investigation into these claims of #5 and you’ll find them as credible as the same BS pushed MSM that made claims that Trump has secret ties to he Kremlin. Or that Trump is an anti-Semite.