Star Wars

Horrifying article in The Guardian about US plans for space weapons. The horror is only slightly diluted by the fact that the head of the US Air Force Space Command is appropriately named as General Lance Lord. In other respects, the proposals seem extraordinarily low tech, such the Rods from God:

"The "Rods from God" scheme would aim tungsten, titanium or uranium cylinders at targets on the ground from a position in low earth orbit. By the time they hit the earth they would be travelling at around 7,500 mph , with the impact of a small nuclear warhead. "

In other words, get something heavy and drop it from a great height.