Sedevacantism...
TRH is this what you believe?
Roman Catholics are presumed to believe what the Church has always and everywhere taught with its highest degree of authority, one part of which is that no formal heretic can legitimately be the pope. It appears clear that John XXIII and all the popes that followed him were/are, by Roman Catholic standards, formal heretics. Were I still a practicing Roman Catholic, I would conclude that the last legitimate pope was Pius XII.
The Roman Catholic Church has, several times in the past already, declared that certain popes (and even strings of them) were invalid. Those the Church refers to as "antipopes." Google the various antipopes that the Roman Catholic Church has declared in its long history (at least forty). Many times, the formal declarations only came long after their deaths.
