Funny, I was just thinking about that earlier. From the news I've read today it seems clear that Obama is going to try to force Assad out. That will give the MB/Al Queda most of North Africa and now a country north of Israel. So, I was wonder where they will go next. I was thinking either Saudi or Jordan. Jordan would be easier and less contraversial, so that would be my pick. With the addition of Jordan, they would have Israel surrounded.
There is no this is going to stop after Syria. The MB has won every fight so far, Libya, Tunesia, Egypt, and now Syria, and seem to have Obama's complete support. So I'm not at all surprised that Saudi wants tanks. I think they are wondering when it is going to be their turn.