Any initiative taken by the European Council on the basis of the first or the second subparagraph shall be notified to the national Parliaments. If a national Parliament makes known its opposition within six months of the date of such notification, the decision referred to in the first or the second subparagraph shall not be adopted. In the absence of opposition, the European Council may adopt the decision.

For the adoption of the decisions referred to in the first and second subparagraphs, the European Council shall act by unanimity after obtaining the consent of the European Parliament, which shall be given by a majority of its component members.