The laser defense system he (liberty?) was talking about is NOT star wars.
The system they are working on now rides piggy-back on a 747 or some big ass commercial sized airliner and it zaps long range missiles out of the sky. Do we have it working? I have no clue, but it sure as hell isn't the original Star Wars program.
There's a lot of misinformation crawling around in this thread too. Numbers of nuclear weapons are irrelvant. In fact, A-bombs are irrelevant... fusion weapons (H-bombs) are infinitely scalable. For you kiddies this means that the more hydrogen (tritium, deuterium) you put in the bomb, the bigger it will explode. You can put in as much as you want. Therefore, we as humans have the ability to blow the earth up in one SINGLE shot if we felt so inclined. (The physics of this explosion would actually toss us out of our orbit, fucking us over either way).
This alone means that A bombs are a thing of the past (do you hear that Iran?) and that a single H-bomb could out-explode every A-bomb that exists on this earth. The U.S. is STACKED with fusion weapons... as is Russia, and the other big players who have had nuclear tech for a long time (Great Britain, France).
If you're worried about somebody lighting off a nuke, it would be Israel in response to somebody fucking with them for the 1,000th time. That is my opinion. Although Kim Jong Il is pretty much batshit insane so he's a possibility too.
If people are unsure of what they are saying, it's OK to ASK. Don't just vomit onto the keyboard and act like an authority on the subject.
"oh well I'm pretty sure the U.S. has 10 trillion A-bombs, jea."