revelation is an anti-roman tract and a piece of war propaganda wrapped in one. The message: God would return and destroy the romans who had destroyed jerusalem.
again ... If you ever read revelation you will find that the events are global in nature and not limited to a little section of europe.
if you understood that revelation is an example of apocalyptic literature in the hebrew tradition, you would know it is simply a message of hope to the believers being persecuted in rome. It isn't prophesy or premonition. It is a coded message of hope.
Revelations is a book giving us a warning of the very soon years of the great tribulation =God's judgments on an evil,sin loving world and a book reveiling Jesus as King of Kings,Lord of Lords returning to earth to destroy all evil and set up His kingdom on earth.