Having this idea for a couple of months now, could a Soviet Union that is only missing the Russian SSR turned Russian Federation continue to exist? OTL the last remaining member state was Kazahkstan, but what if more stayed part of the SU? I know that could be tricky as soon as Belaus and Ukraine leave, but either way most SU territories would be split into East/ West seperated by Russia. Could both coexisting work? Would there be to much rivalry between them? What would the main leading nation of this new SU be instead of Russia and how would both nations be viewed from the outside and in the Rest of the world?