The Permanent member to the UNSC was USSR, and it doesnt exist. They did not follow the correct procedure as far as the legal arguments appear to go. LW 0.5 can find his own references, but here is a hint:
Push to end Russia's status as permanent UNSC member gains steam
Talk of stripping Russia of its status at the UN has escalated since the Ukraine invasion began.
3 MAR 2022
Washington is "investigating the prospects" of expelling Russia as one of the five permanent Security Council members, Deputy Secretary of State Wendy Sherman told American lawmakers on Wednesday.
No decision has been made on whether to try to achieve such an outcome, which would likely require changes to the UN's charter.
Sherman's comments came after the UN General Assembly voted overwhelmingly to condemn Russia for last week's invasion of
Ukraine and demand that Moscow withdraw its forces from the country immediately.
The rebuke was issued through a non-binding resolution after a failed vote last Friday by the Security Council, where Russia used its veto power as a permanent member to block the resolution, the report said.
Talk of stripping Russia of its status at the UN has escalated since the
Ukraine invasion began.
Some US lawmakers have called for removing Russia from the Security Council, RT reported.
Ukraine's government has repeatedly urged the UN to reconsider Russia's status on the Security Council.
There are many ways to "skin the cat", and there is a reasonable basis to have a go at doing that. Russia was never made a permanent member by the UNGA, It assumed that it would be on the fall of the Soviet Union, and it was not correctly done. the legal argument goes that the USSR in it's collapse never nominated a replacement for it's seat to the UNGA, and the UNSC, and as it doesn't exist now, it cannot post-fact do so. Therefore Russia has no chartered right to be on the UNSC, in any form, let alone an PM, and let alone with veto authority. Details matter.
Now the litigation of that is up to the UN, and we are at a time and place where it is a reasonable time to have that discussion, after all, Russia is now shown to be a corrupt and dysfunctional enterprise, and it has already taken retaliation to many of the members of the UNGA, Their hold over Eritream and NOrth Korea notwithstanding....