In my opinion this dream is talking about the Church of Christ which He established through Peter "Matthew 16: 18 You are Peter and upon this rock I'll build my Church and the gates of hell shall not prevail against it", and still today we can see this dream in live. And the powerful Rome is now a Catholic Christian nation which previously used to persecute Christians and still the Catholic Church is the head of the Rome now after the destruction of Roman empire that Iron feet...