The President, acting with the respective minister or ministers, or with the Council of Ministers, has the duty to conclude and sign treaties, the approval of the General Assembly being necessary for their ratification (Article 168, paragraph 20 of the Constitution). The General Assembly approves or disapproves, by an absolute majority of the full membership of both Chambers, the treaties of alliance, commerce, and conventions or contracts of any nature that Government may make with foreign States (Article 85, paragraph 7 of the Constitution).