2.Operating expenditure to which the implementation of this Chapter gives rise shall also be charged to the Union budget, except for such expenditure arising from operations having military or defence implications and cases where the Council acting unanimously decides otherwise.In cases where expenditure is not charged to the Union budget, it shall be charged to the Member States in accordance with the gross national product scale, unless the Council acting unanimously decides otherwise. As for expenditure arising from operations having military or defence implications, Member States whose representatives in the Council have made a formal declaration under Article 31(1), second subparagraph, shall not be obliged to contribute to the financing thereof.