Articles 63 TFEU and 65 TFEU, read in conjunction with Article 4 TEU, must be interpreted as not precluding a Member State from not extending, in a situation such as that at issue in the main proceedings, the benefit of the advantageous treatment accorded to a resident shareholder as a result of a bilateral double taxation convention concluded between that Member State and a third State — by which tax deducted at source by the third State is allowed unconditionally as a credit against tax payable in the shareholder's Member State of residence — to a resident shareholder in receipt of dividends from a Member State with which that Member State of residence has concluded a bilateral double taxation convention under which the granting of such a set-off is subject to compliance with additional conditions provided for by national law.