Part 1: Provisions of the Treaty on European Union
Article 7(2) – Determination by the European Council of the existence of a serious and persistent breach by a Member State of the values referred to in Article 2 TEU, such as respect for freedom, democracy and respect for human rights.
Article 15(4) – European Council decisions are taken by consensus, except where otherwise provided in the Treaties. The removal of the provision for consensus in this Treaty Article would change the default decision-making mechanism in the European Council.
Article 22(1) – European Council decisions on the strategic interests and objectives of the EU specifically in respect of the EU’s external (global) action and common foreign and security policy.
Chapter 2 of Title V TEU – Specific provisions on the Common Foreign and Security Policy. The entire chapter is included because, as Article 31(1) TEU specifies that decisions under the chapter should be taken by the European Council and the Council acting unanimously “except where this Chapter provides otherwise”, proposals could otherwise be agreed using a Treaty change to move other Treaty articles on CFSP to qualified majority voting without the need to alter the general principle provided by Article 31(1) TEU. The effect of the reference to the chapter as a whole is therefore that any proposal to remove the need for unanimity, consensus or common accord within this chapter of the TEU would attract a referendum.
Article 50(3) – Where a Member State has submitted its intention to withdraw from the EU but where that Member State requests more time in order to complete the necessary preparations for withdrawal, the European Council can decide by unanimity to give more time.