Well, hold on a minute. We are being told that Russia has a missile defense system. But, we’ve not seen it, and we’ve not seen it in action, from what I read. So, maybe it’s a couple of sheep herders with binoculars and AK’s, out on the border?
AFAIC, I’d rather not put my money on a Russian anything, at this point.
To your other point. YES! We need, and should be building, a US missile defense capability that will protect America from whatever threat any cranky nutjob in the third world can cook up.