When I put all the pieces gathered from numerous stories about the war (most of them gathered from FR) I'm led to believe that the Russians were working both sides like they always do. (as do we)
There were stories that claimed they were telling saddam that there would be no American invasion. There were stories that said they were feeding us information on Saddam.
In the end Saddam didn't appear to be expecting to see tanks rolling into baghdad. He even left his bridges intact for use after the war.
"didn't appear to be expecting to see tanks rolling"
But apparently, he had enough of a heads up to get his wmd's out of iraq.