What was done hundreds of years ago does not apply to today. Please give me an example of the catholic church waging a war of conquest in the last two hundred years. Christianity is about spreading the word of christ and allowing people to chose. islam is about submission. islam means to submit in arabic.
Rome is a city in Italy. Not a caliphate.
The sunni belief is that the world needs to be conquered in order for heaven to be brought to earth and everything changed to a perfect world. The shites believe the world needs to be almost completely destroyed before the 12th imam returns and brings heaven to earth. Both want to first establish a middle east caliphate and expand from there.
I do get tired of the old christians did it in the middle ages routine I keep hearing. That has absolutely nothing to do with whats going on today. If your great great grandfather was a murder does that mean you should be considered a murder too?
When I die I'm sure to go to heaven, cause I spent my time in hell.
You get more with a kind word and a two by four, than you do with just a kind word.