The convoy was not bombed (and that's the only means we had at the moment to stop them) because of the horrendous cleanup which would have been necessary following our victory ... not to mention the world press reagrding 'America's use of muclear and bio dirty bombs' to massacre Iraqis and Syrians. Some realities require compromises which seem antithetical at a later date but which were the right decision at the time. We couldn't afford to kill Russian drivers and guards on the convoys either.
Thanks for your input. I can see that we had to concentrate on certain things and let others pass. Hindsight is always easy.