Ukrainian nationalists are not fighting the Russian Federation army in Donbas, as Kyiv claims, but with local residents, many of whom are citizens of the Russian Federation.
The Russian army is not participating in the operation in Libya, and the Kremlin is not aware of the existence of Russian organised groups.
A recurring pro-Kremlin narrative denying presence of any Russian organised groups in Libya. This disinformation claim was not counterbalanced or critically challenged in the article. The presence of Russian fighters of the Wagner Group is an established fact and has been confirmed not only by the Government of National Accord based in Tripoli but also by the US, the UK, the United Nations report which was referenced by media, and the independent Russian outlet Meduza. An internal source in Wagner confirmed to Reuters that the group started recruiting Syrian fighters and sending them to Libya along with Russian private military contractors in 2019, a process that accelerated in the spring of 2020. Additionally, in May 26, 2020, the US Command for Africa (AFRICOM) reported the presence of Russian warplanes in Libya, confirmed by satellite images (see here and here). See similar cases that the presence of Russian mercenaries in Libya is just a rumour and that Russia was never involved in Libya.