Armenian villages and the massacre of 10,000 of their inhabitants, including the destruction of the large Armenian town of Agulis (present-day Yuxarı Əylis) and its 1,400 inhabitants. In late 1919, Samed Bey complained to the Azerbaijani government about the presence of Iranian agents trying to bring refugees from Nakhichevan into Iran. Some months after the Sovietization of Azerbaijan on 18 June 1920, Armenia issued an ultimatum to the rebels of Zangibasar (present-day Masis) some 15 kilometers southwest of Yerevan to submit to Armenian rule. Not expecting that the ultimatum would be answered, the Armenian army launched an offensive to recapture the rebelling districts on 19 June. In the fight for Zangibasar, Lieutenant Aram Kajaznuni, the son of the first prime minister of Armenia was killed, however, the Armenians won the battle on 21 June, with the local Muslims consisting mainly of Tatars fleeing to Aralikh (present-day Aralık) in the neighbouring Surmalu uezd to avoid retribution. After the battle, volunteer detachments consisting of Armenian refugees from the Aresh and Nukha uezds of Azerbaijan looted the abandoned homes. The militarists in the Armenian government were strengthened by the success in Zangibasar, hence, they prepared to move against the rebels of Vedibasar (present-day southern Ararat Province) and Nakhichevan; the advance into the former began on 11 July and by the next day, Armenian forces had captured the district and reached the boundary of the Erivan and Sharur-Daralayaz uezds at the mountain pass known as Volchi vorota () and the local Muslims fled into Sharur. On 14 July, the Armenian advance continued through Volchi vorota into the Sharur district, capturing it 2 days later whilst the locals fled across the Aras river into Iran. Before the Armenians could advance into the Nakhchevan uezd proper, the national council () of Nakhichevan appealed for peace, however, the negotiations only served in delaying Armenia's advance, after which Şahtaxtı some northwest of the city of Nakhichevan was captured. By this time, the 11th Army of Soviet Russia (which had previously invaded Azerbaijan) occupied southern Nakhichevan with the aim of linking with Kemalist Turkey. Colonel V. Tarkhov, the commander of the "united troops of Soviet Russia and Red Turkey in Nakhichevan", addressed the Armenians in Shahtaght, proclaiming Soviet control over the rest of the district, thus putting an end to the Armenian campaign. During the Turkish–Armenian War beginning in September 1920, Armenia for the third time in six years