Then comes a clause made necessary by the action of
Germany. The Allies agree to preserve their natural resources for the Allied countries during the reconstruction period. They undertake to facilitate the interchange of those resources. In order to defend O.:x.1861ra from the risk of economic aggression on the part of the enemy countries which might result from dumping or any other mode of unfair competition, they decide to fix by agreement a period during which the commerce of the enemy Powers shall be submitted to special treatment. Finally, the Allies agree to devise measures for preventing enemy subjects from exercising in their territories "certain industries or professions which concern national defence or economic independence."