It is really hard to know what to do.  I believe the boycott is a start--more teeth to it than playing "Red Rover, Red Rover" with governmental officials.  The boycott touches prestige, and that means a little more to these countries who like "standing" and "status" in these international organizations.  However, if Putin is determined to rebuild the Old Soviet Empire, then hitting them in the pocketbook is more important.  Put our missile defense up, etc.  Reagan and Bush were pretty smart after all :-).