18 By the end of 1991 tensions spiraled gradually into the military phase, when isolated armed attacks by the Armenian informal paramilitary groups (19) across the border into Azerbaijan and in the former NKAO took the form of planned combat operations.
34) However, after the armed attack and subsequent invasion on April 2, 1993, of the Kelbadjar district, which is located outside of the administrative line of former NKAO, the international community began expressing serious doubts about Armenia's claims of noninvolvement.
36) The evidence made available to the Security Council by Azerbaijan confirmed that Kelbadjar district was invaded from at least two directions: from the territory of Vardenis district of Armenia bordering Azerbaijan, and from within the former NKAO.
122) In this report, which was drafted in the aftermath of the armed attack and seizure of the city of Agdam located beyond the administrative line of the former NKAO, the Chairman of the Minsk Conference, Mr.
The essence of Armenian discontent was that the Azeri authorities deliberately severed their ties with Armenia and pursued a policy of de-Armenization by a planned Azeri settlement, by squeezing the Armenian population out of the NKAO and neglecting its economic needs.
On 20 February 1988 the regional Soviet (local parliament) of Nagorno-Karabakh, proceeding from the right of nations to self-determination, appealed to the Supreme Soviets of the USSR, Azerbaijan SSR and Armenian SSR, asking them to authorize secession of the NKAO from Azerbaijan and its unification with Armenia.
Meanwhile, the NKAO regional Soviet was reformed into the Karabakh National Council, which held a joint session with the Armenian Supreme Soviet on 29 November 1989 and proclaimed the reunification of Nagorno-Karabakh with Armenia.