Much as everyone is laughing at this, there are several European countries that recently purchased Israeli missile defense systems. This could potentially be Russia attempting to show them that it won’t work (or probe for weaknesses - depends how far along they are in their anti-anti-missile program).

Either way, it does put Russia on the spot as knowingly providing weapons that will likely be used against Israel. Which hopefully will mean greater support of Ukraine by Israel, who have up until now been avoiding that to maintain security ties with Russia in order to counter Iranian operations in Syria.

Advanced Russian missles

So the ones with minimal rust on them that will probably work?

Russia can’t afford to give up weapons