Foreign Military Presence in Ukraine is Unacceptable for Russia - MFA
How much verified proof exists for this claim
Signal only - unverified source
How intriguing or unexplained this claim is
This claim is well-documented and aligns with Russia's long-standing position on foreign military presence in Ukraine, which has been extensively covered in mainstream media with clear facts and statements from official sources.
Russia would regard the deployment of any foreign military forces or infrastructure in Ukraine as foreign intervention, and would treat them as legitimate targets, Russia’s Foreign Ministry said.