... The treaties or agreements regularly ratified have, on their publication, an authority superior to that of the laws under reserve, for each agreement or treaty, to its application by the other party and of its conformity with the relevant provisions of the law of treaties.
Without prejudice to the previous paragraph, the ratification or the approval of an international engagement containing a clause contrary to the relevant provisions of the Constitution may intervene only after the revision of it. (Art. 70)