paragraph 63 in volume 1, chapter 5, Advisory Opinions
Observations similar to those made regarding the General Assembly are appropriate in relation to the vote in the Security Council, with the substitution of Article 27 of the Charter for Article 18. All decisions of the Security Council require at least nine (before 1963, seven) favourable votes, and decisions on all matters other than procedural matters require the concurring votes of the permanent members (meaning no negative votes, the veto), subject to the provision …