Russia has a naval port in Syria. They will never give it up.
Have no fear. Bronco Bama has never met a world leader to which he wouldn't capitulate.
And Assad is not leaving as long as he can still fight. Note the article linked below is offered once for free then requires a registration the second time.
Assad isn't afraid of breaking the chemical weapons taboo in Syria
And BTW - The media always claims Assad's missiles are scuds. Unfortunately, he also has quite a few more accurate missiles. Can see him wasting the scuds on the rebels, and saving the more accurate missiles for the western invasion which is coming.