The West had suggested to stage a war in Ukraine, but Russia refused to do it. Historically Ukraine is a Russian land inhabited by Russian people, many of them duped though. Russia, therefore, moved the battlefield to Syria. This was right to do because the wars are better to be staged on others’ territory. The powers of the world are sorting out their relations in Syria.
The disinformation message aims to deny ongoing acts of aggression by the Russian armed forces in Ukraine. See previous cases here.
The Syrian conflict began in 2011 and has its own tragic and complicated timeline unrelated to events in Ukraine. Implying that the West instigates wars around the world is another conspiracy theory, widely used by the pro-Kremlin media.
This message also suggests that Ukrainians are part of Russian people, which is a recurring pro-Kremlin disinformation narrative aimed weakening the national identity of Ukrainians and eroding Ukraine's sovereignty. Ukraine is a well-defined nation-state with a long history which preserved language, literature and identity, despite foreign rule for long periods.