Last time I checked no President has offered a Quid Pro Quo on National Security for their reelection, last time anything has come close to this would be Ted Kennedy in 1984.
By offering to negotiate from a position of more flexibility ( ie weakness) that is the only conclusion to draw.
You assume that it would be two or more years until this happens, Russia clearly sees this as a clear and present danger to them, and as such would be willing to call Obama on this once he is reelected. You also seem to believe that Ahmadinejad is the power in Iran ( He's not ).
Conclusion: The events that led up to the invasion in 2008 were essentially Russia finding a excuse to invade Georgia, ie a drop of a hat.