De medlemsstater, der lægger vægt på deres tradition for neutralitet, og som udgør en tredjedel af de 15, har ganske vist accepteret, at alle Petersberg-opgaverne integreres i traktaten, men de har dog klart afvist den garanti for fælles forsvar, som Bruxelles-traktaten indfører mellem medlemmerne af WEU.
Member States with a tradition of neutrality, which make up one-third of the Fifteen, have accepted the integration into the Treaty of all the Petersberg tasks, but have however clearly refused the collective defence guarantee instituted by the Brussels Treaty among members of the WEU.