I realize there's a whole lot of wtf going on about the peace prize going to Obama, but come on. The irritating missiles have been canceled. Russia is acting all happy about us. There's cooperative action on reducing the global nuclear threat (which includes us, after all, as the only people who have actually used nuclear weapons to attack others). This isn't worth a peace prize? They've used that prize before as a carrot to reward people for taking important early steps and to encourage them (and others) to continue.
Maybe someone else _really_ should have gotten it instead. But you can _always_ say that.