Because it may come from the superpowers is conflicting in the subject of the contract to manufacture the weapons or to attack the enemy's partners and the broader limits to the international.
The reason may be due to the great power conflict in the contract manufacture of weapons or attack a coalition of other parties. And to limit the broader international community.
The reason may come from the conflict in the terms of a contract or attack weapons production affiliate of the other party. Limitation and broadly to various countries.