A rise in UN membership should be reflected also in an increase in Security Council members.  In 1945 there were only 51 UN members, so eleven Council members were adequately representing all voices. Today the UN membership has risen to almost four times the number of the original one, yet there are only fifteen voices in the Council. This means that there are many countries who do not have anyone on the security council that has similar priorities to them, their views may well be unrepresented.