I disagree with a lot of things being said in this thread. There is no such thing as a "super-weapon" or a weapon that will assure instant or lasting victory. We've seen battles won by those types of weapon, but the World keeps changing.
What the U.S navy is developing, it's also within any other country capability.
And let's not forget that all technology has a weak and vulnerable bone. It's just a matter of finding it. These types of weapon are really neat and
cool, until an EMP attack sneaks up on them, and then you just have a big paperweight on your ship, while the opposing force has an old cannon aimed
at your ship.
Things aren't that simple.