A UNSC reform is very hard to achieve due to the many different interests and demands.  Reforming the UN Security Council is very difficult as no one can agree which new powers deserve representation, whether they should have a veto, and even whether permanent membership should continue to exist in any form. Japan and India seem obvious candidates for permanent status, but their candidacies are fiercely opposed by a variety of other Asian countries, while Nigeria and Egypt both feel they have a good claim to an "African" seat. The EU also considers it deserves a separate place. Furthermore Brazil as a very fast developing country and turning into a world power claims it also has a right in the UNSC as a permanent member. All these different demands opinions make an eventual reform or expansion of the UNSC very hard to achieve.