Despite Russia's accusations, exactly who was on the plane and how it went down are yet to be independently confirmed. Various events in this war have prompted a raft of conflicting accusations and, especially amid a sensitive story such as this, it's important that evidence is presented before any conclusions are reached. In the meantime, Ukrainian officials have said they are looking into what happened on their side and will comment in due course.
This was an insane act of barbarism on the part of Ukraine. Not only did the nation sabotage sensitive prisoner swap negotiations, they violated their bond and obligations to their own citizens, showing an utter disregard for their lives. Actions such as these seriously call into question whether Russia can ever enter into any security agreements or negotiations with Ukraine.