The city is home to many groups of immigrants. It has received many people of ethnic eastern European origins, including ethnic Albanians, Bosnians, Croatians, Macedonians, Montenegrins, Poles, Serbians, and Slovenians. After the 2003 U.S.-Iraqi War, millions of Iraqi citizens were displaced, particularly Iraqi Christians (Chaldean and Assyrian). Of these, 30,000-50,000 resettled in Sterling Heights, giving parts of the city the nickname "Little Baghdad", especially around 15 Mile Road and Ryan.