Territorial questions

In April in1920 Armenian armed forces liberated Artsakh (Nagorno Karabakh). 9th Congress of  Nagorno Karabakh in April 25 proclaim joining of Karabakh to the Republic of Armenia. But this joining failed because of the sovietization of Azerbaijan.The policy of Musavat Azerbaijan to posses Karabakh with arm continued soviet Azerbaijan. Soviet Russia on the basic of Soviet Azerbaijan was seeking to connect with Kemalist Turkey over Nagorno Karabakh- Zangezur -Nakhichevan, hoping,that as Turkey is revolutionary country, It will help them (Russians) to spread national liberation movements and revolution in the countries of the East.
In July 7 in 1923 on the one part of  Nagorno Karabakh was established Nagorno-Karabakh Autonomous Region (NKAR). In 1923 population of NKAR was 157,800. During 60 years of existence of NKAR, people of Artsakh were being obeyed to different limitations. As a result of this the Armenian population of 85 villages deprived of their homes. Decreased also specific number of Armenians (in 1926- 93,5% Armenian, in 1989- 77% Armenian). in The late 80 entension of national-liberation movements in USSR the policy of "reconstruction" couldn't affect on the question of Nagorno Karabakh. The Armenians of Artsakh again raised the issue of  Nagorno Karabakh. The government of Azerbaijan had for an object to deprive Armenians of  NKAR from their homes. In february 20 in 1988 convenes session of regional Council of NKAR approved a motion to apply to the Supreme Councils of Azerbaijan SSR, Armenian SSR and USSR about withdraing NKAR from the Azerbaijan and joining it to Armenia. But both Baku and Moscow declared that it is impossible. Center, in spite of appeals of democracy, "Reconstruction" and publicity, initially was in a negative position, so that national movement doesn't affect to another republics. Kremlin Started represent "issue of  Nagorno Karabakh" not political, but economic problem. It isn't occasional that in March in 1988 by the decision of CRSU Central Committee (The Soviet Union's Communist Party Central Committee_ Council of Ministers of USSR 400 million ruble was provided to NKAR to solve social-economic problems of that region.But Azerbaijani government used that many for development of Azerbaijani settlements of  Nagorno Karabakh. For stopping the movement Azerbaijani government was subjected to blockade of Nagorno Karabakh, which arranged the social-economic situation in the region.
To stabilize the situation in the region, in Stepanakert was invited Congress,which declared to restore Soviet Government and the Regional Committee.In the same time it was decided to pass the governance of region to the National Council elected by them (Congress). The existence of National Council of Nagorno Karabakh was not profitable neither for Azerbaijan nor for Central Authorities.
The Second secretary of Azerbaijan Communist Party Central Committee was appointed Polyanichko, which acquired experience to press national-liberation movements in Afghanistan. The aim of his Commission was changing demographic situation of the region in favor of Azerbaijan.
Making sure that it isn't managed to stop Karabakh movement by political methods, Azerbaijani government, with the connivance of USSR central government, was opposed the movement to the policy of brutal force and violence- SUMGAIT.

Baced on the development of such a process by the joint decision in December 1st in 1989 Supreme Council of Armenia and National Council of Nagorno Karabakh Autonomous Region  declared reunion of Armenia and Nagorno Karabakh. After that in February 10 in 1990 presidency of Supreme Council of USSR canceled the decision about reunion of Armenia and Nagorno Karabakh. However, in 1991 authorities of Shahumian region declared The Republic of  Nagorno Karabakh. And in December 20 among population of Artsakh was held referendum,during that the population vote in favor of independence. In Januari 6 Republic of Nagorno Karabakh officially declared itself independent from the Azerbaijan USSR.
In 1991-1992  between Armenians of Nagorno Karabakh and Azerbaijani government was started large-scale war. During that war The Republic of Armenia supported Artsakh.