This was just a drone missile designed to test the radar on the Arrow missile defense system. Believe it or not Israel would like to make sure the system is working now rather than wait for Assad to fire a missile and only then do we discover there was a problem. This test was carried out in international waters not sovereign Russian or Syrian territory. It was coordinated with the Americans so probably it was expected that this test was going to be conducted would be relayed to Russia. It doesn't matter if the message was relayed or not thats just a curtsy not an obligation and only if it was headed toward a Russian ship would it be any concern of theirs so screw the Russians.
Doctors Without Borders leaves northern Afghan city of Kunduz after airstrike destroys hospital (AP)
from the article: Russia reprimands Israeli military attache over ballistic missile test