 Complete the following phrase:  Several days after Russian media reported that Russian PMCs were ready to fight against Azerbaijan in Nagorno-Karabakh, a source within the Wagner Group, as well as Russian military analyst Pavel Felgenhauer, reported Wagner contractors were sent to support armed forces of the partially recognized Republic of Artsakh against Azerbaijan during the 2020 Nagorno-Karabakh war as ATGM operators. However, Bellingcat reported that the Wagner Group was not present in Nagorno-Karabakh, pointing to the Reverse Side of the Medal RSOTM public channel, used by Russian PMCs, including Wagner. RSOTM posted two images and a song alluding to the possibility of Wagner PMCs arriving in Nagorno-Karabakh, but Bellingcat determined the images were unrelated. Following the end of the war, retired military captain Viktor Zlobov stated Wagner PMCs took a significant role in managing to preserve the territory that remained under Armenian control during the conflict and were the ones mostly responsible for the Armenians managing to keep control of the town of Shusha for as long as they did before it was ultimately captured by Azerbaijan during 