Way back in his blogspot days, InstaPundit suggested exploring the "Bugs Bunny option" in fighting terrorists. But if he wanted to do someone some actual, serious harm, What Would Bugs Bunny Do?

Drop an anvil on them, of course.

Isn't that basically what this is?

But now the crews operating over Iraq from the Ali Al Salem airbase in northern Kuwait are about to go to the opposite extreme and use "inert bombs".

These are basically blocks of concrete shaped as bombs and painted blue to identify them as non-explosive if they are discovered still intact after the war...

But they will be laser-guided 1,000lb blocks of concrete, capable of destroying a tank or artillery piece, but without causing a devastating explosion that would put civilians at risk and shatter surrounding buildings.

I wonder if this is a trend, seriously: kinetic-kill weapons used against vehicles. Jerry Pournelle long ago hypothesized a "Thor" weapon, basically a precision-guided iron bar dropped from orbit. The tank-killing "sabot" round fired by the M1A1 tank is basically a titanium javelin thrown at transsonic speed. (Click the link and scroll down for a cool photo of a sabot round in flight.) With enough speed and precision -- such as the Abrams' big gun and fire control system, or precision-guidance electronics and lots of gravity -- what do you need explosives for?