280,000 persons—virtually all ethnic Armenians who fled Azerbaijan during the 1988–1993 war over the disputed region of Artsakh—were living in refugee-like circumstances in Armenia. Some left the country, principally to Russia. Their children born in Armenia acquire citizenship automatically. Their numbers are thus subject to constant decline due to departure, and de-registration required for naturalization. Of these, about 250,000 fled Azerbaijan (areas outside Nagorno-Karabakh); approximately 30,000 came from Nagorno-Karabakh. All were registered with the government as refugees at year's end.