日本国憲法第61条
条約、国際約定及協定ノ締結ニ要スル国会ノ協賛ニ付テモ亦前記第五十五第二項ニ準ズルコト
In addition to other executive responsibilities, the Cabinet shall:
Conduct foreign relation;
Conclude such treaties, international conventions and agreements with the consent of the Diet by prior authorization or subsequent ratification as it deems in the public interest;
条約の締結に必要な国会の承認については、前条第二項の規定を準用する。