In exercising its powers regarding the provisions of Sections 4 and 5 of Chapter IV of Title III relating to the area of freedom, security and justice, the Court of Justice of the European Union shall have no jurisdiction to review the validity or proportionality of operations carried out by the police or other law-enforcement services of a Member State or the exercise of the responsibilities incumbent upon Member States with regard to the maintenance of law and order and the safeguarding of internal security.