What obama should do is what he's doing, refuse to speak to those lesser beings who aren't paying attention to him anyway.
obama is becoming an afterthought. World leaders are talking to one another and letting obama know he's not a member of the club. In response obama says "I don't want to play with you".
Easy to say, hard to provide evidence to support it. If Russia was holding someone like Snowden under a Rep president, you and the other members of the hypocrite horde would be calling for nuclear war.
Oh yeah? If Bush had refused to meet with Putin you'd be comparing him to Hitler.
Wait, you do that anyway.