 Complete the following phrase:  On 28 September, Russian media reported that Russian private military companies were ready to fight against Azerbaijan in Nagorno-Karabakh. On 1 October, a hrefRadio20Free20EuropeRadio20LibertyRadio Free EuropeRadio Libertya, citing a Wagner Group source, claimed they were already in Nagorno-Karabakh and participating in hostilities. The Russian military analyst Pavel Felgenhauer also stated that Wagner contractors were sent to support the Armenian forces as ATGM operators. After the war, in December 2020, a photo of a Wagner mercenary, apparently taken in front a church in Shusha during the war, appeared on the internet. Also, the Russian media leaked a message, apparently describing how the Armenian government refused to pay the Russian mercenaries for their work, and how, because of the, some of the Wagner mercenaries intended to return to Russia or defect to the Azerbaijani side. The Russian media reported that, in November, there were about 500 Russian mercenaries fighting on the Armenian side, and some 300 Russian mercenaries had taken part in the 