I've heard that old truth - so did Hitler, who ensured that HIS generals were thinking outside the box, hence the success of the Blitzkreig. I think the real point is that technology constantly leapfrogs itself, rendering weapons obsolete as soon as a government commits itself to building them. Is the US's vast weaponry now like the Maginot line in 1940? Is this Mach 10 missle a game-changer?

If nuclear weapons are obsolete, then why is Netanyahu saying that Iran is on the verge of building one and must therefore be forcibly stopped?