Russia cooperating with NATO’s anti-missile shield

Funny how things change, at least ostensibly.  Russia is now joining the long-discussed missile defense shield project, rather than sitting on the outside and grumbling about neo-Cold War politics.  We’ll see how this develops…Of course, one always wonders against whom are you building this shield (aside from the standard reason of defense against a “rogue” state with long-range WMD).  I really don’t have anything else to say, as I haven’t read up on this in a long time…but I hope it’s of passing interest.