Banning Weaponized Orbits?

All this ASAT chatter on the X37-B thread made me think of another scenario.

State-sponsored terrorist threat to commercial satellite infrastructure.
aka how to deploy ASAT weapons against GEO satellites?

For kinetic kill weapons, you'd want to launch in a elliptical orbit that
crosses through GEO. You'd open the kill devices to form a tubular shaped
cloud that crosses GEO, intersecting at four regions in space. You'd want the
angle of intersection to be as parallel as possible to maximize relative
velocity and the angle of attack.

One could also launch weapons in multiples of these orbits to increase the
number of 'kill cylinders'.

The only usefulness of such orbits would be for a weapons system. Should we
get busy on a treaty now?

Dave