Armenians constitute the main population of Armenia and the de facto independent Nagorno-Karabakh Republic. There is a wide-ranging diaspora of around 5 million people of full or partial Armenian ancestry living outside of modern Armenia. The largest Armenian populations today exist in Russia, the United States, France, Georgia, Iran, Ukraine, Lebanon, and Syria. With the exceptions of Iran and the former Soviet states, the present-day Armenian diaspora was formed mainly as a result of the Armenian Genocide.