Islamic Crusades 2: Before Islam... Egypt, Iran, IraqBLOG: http://occidentalsoapbox.blogspot.com/2008/09/before-islam-story-of-islamification-of.html
These are three brief examples, but this story has been repeated wherever Islam has asserted itself. When Islam comes to a new nation, its purpose is not to adapt to the fabric of the host society, or to become just one religion among many equals. Its goal is to become the dominant religion. The Muslim belief is that once a territory has been under Muslim rule, it can never be relinquished again. And so former Muslim colonies such as Spain, Israel and the Balkans, are high on the list for reconquest. But make no mistake, any territory is fair game.
Further reading on Dar-al-Islam, Dar-al-Harb, and Dhimmitude:
http://en.wikipedia.org/wiki/Divisions_of_the_world_in_Islam
http://jihadwatch.org/dhimmiwatch/
http://en.wikipedia.org/wiki/Dhimmi
http://www.dhimmitude.org/
Further reading on Egypt and the native Copts:
http://en.wikipedia.org/wiki/Copts
http://www.independent.co.uk/news/world/africa/three-die-as-muslims-sack-church-in-dvd-protest-512127.html
http://freecopts.net/english/index.php?option=com_content&task=view&id=90&Itemid=9
http://en.wikipedia.org/wiki/Coptic_Orthodox_Church_of_Alexandria
http://en.wikipedia.org/wiki/Copt
http://www.copts.net/history.asp
Further reading on Iraq and the native Assyrians:
http://en.wikipedia.org/wiki/Assyrian_people
http://www.christiansofiraq.com/
http://www.washingtonpost.com/wp-dyn/content/story/2008/04/21/ST2008042103252.html
http://www.nytimes.com/2006/10/17/world/middleeast/17christians.html
http://www.washingtontimes.com/news/2007/oct/01/iraqi-christians-forced-to-leave/
Further reading on Iran and the native Zoroastrians:
http://en.wikipedia.org/wiki/Zoroastrianism
http://en.wikipedia.org/wiki/Zoroastrians_in_Iran
http://news.bbc.co.uk/2/shared/spl/hi/picture_gallery/05/middle_east_zoroastrians_in_iran/html/1.stm
http://plateauofiran.wordpress.com/2008/07/11/zoroastrians-and-islam-in-iran/