ships won't fire at enemy planet due to treaty!

[Suicide Junkie]

Does it have anything to do with the fighters on the planet?
Perhaps the missiles don't want to hit them.

The other thing I see is that the ships are all at exactly 50% ordnance... Which would be right when the first missile launcher's ammo goes empty.
Of course, I haven't seen any problems with having ordnance bays and ordnance in the weapon launcher.