In April 1920, Nzhdeh led his troops from Kapan to Mountainous Karabakh's southern district of Dizak, soon after the massacre of the Armenian population of Shushi. Dro's forces also marched to Karabakh from Yerevan. Their intervention, along with pressure on the Azerbaijani authorities from the Entente powers, brought an end to the massacres of the Armenian population of Mountainous Karabakh.