Investment in the territories under the jurisdiction of Member States by Iran, its nationals, or entities incorporated in Iran or subject to its jurisdiction, or by persons or entities acting on their behalf or at their direction, or by entities owned or controlled by them in any commercial activity involving uranium mining, production or use of nuclear materials and technology, in particular uranium enrichment and reprocessing activities, all heavy-water related activities or technologies related to ballistic missiles capable of delivering nuclear weapons, shall be prohibited. The Union shall take the necessary measures in order to determine the relevant items to be covered by this Article.