Translate the following English sentence to French:
"All the while, outside the European Union, several of its Member States, among the most powerful of them, are supporting, arming and financing vile dictatorships, especially in their former colonial empire."
Et, à l' extérieur, plusieurs des États de l' Union européenne, parmi les plus puissants, soutiennent, arment et financent des dictatures infâmes, notamment dans leur ancien empire colonial.