The five seats reserved in the Charter for China, France, Russia, UK and US are not subject to any review since this would mean taking away rights accorded to these members by treaty. It would neither be wise nor realistic in my view to aim at submitting them to a review. New permanent members must be subject of a review mechanism, however. At the same time, it allows to adapt the composition of new permanent membership in case of possible changes in international relations or constructive proposals to replace a given permanent member by another one supported by the necessary majority of Member States. This would have to be done, of course, through an amendment to the Charter in accordance with Art.
Permanent membership remains permanent.
Permanent members under review depend neither on elections every two years like non-permanent members nor are they elected for a limited time. They remain permanent. What they won't be in the future is eternal. Reform Review and Art. 108 and Art.