Some background on the ethnic unrest between Armenia and Azerbaijan:

CAUSE - A territorial dispute over Nagorno-Karabakh, an area about the size of Delaware that was assigned to Azerbaijan in 1923. The territory's population in the 1979 Soviet census was 162,000, of whom 76 percent were ethnic Armenians and 23 percent ethnic Azerbaijanis. Nagorno-Karabakh is surrounded by Azerbaijani territory and has no border with Armenia.

TACTICS - Beginning in February 1988, Armenians held general strikes and mass demonstrations demanding that the territory be annexed to Armenia. The Nagorno-Karabakh legislature requested the transfer and Armenia's legislature agreed, but the Azerbaijani leadership refused consent.

EFFECTS - The strikes cost millions of rubles in lost production. The dispute led to a riot Feb. 28 in the Azerbaijani city of Sumgait that killed 32 people, including 26 Armenians.

GOAL OF THE ANNEXATION MOVEMENT - Armenians, most of them Christians, allege discrimination against ethnic Armenians under the rule of Azerbaijanis, a predominantly Moslem ethnic group.