Iran's relationhip to Russia is in no way strategic to EU. Overall trade between Russia and Iran is 1/400th of that of Russia <-> China trade. Breaking the relationship now would not lead to any noticeable effect on Ukraine war. Russia manufactures geran drones itself. And you will not bomb technology/knowledge transfers away anyway. Vast majority of the materials for Russia's war come from China and the rest of the world, incl. USA and Europe.

What is a complete strategic failure though is EU's support for Israel's impunity that created this war, which will negatively effect all of the EU. There should have been severe sanctions and travel bans on all Israelis long time ago, to force their government to act better. Economic losses this shithole country caused to the EU, will not be offset by any benefits Israel's<->EU trade could create for a looooong time.

The EU should have attacked Iran the moment Iran started providing defensive assistance to Russia. Initially it wasn't know how that they gave them but explicit shipments of drones. That would have been the moment to pounds but of course the EU did not have the strength to act in that moment. That weakness unfortunately persists but it will not forever. And in time, oncr strengthened again, the EU will be able to act where needed.

If you think this war is somehow negatively impacting the EU you're being very short sighted. Do you realize the level of impunity the IRGC has traditionally operated with in europe? Only the mass murderer of the Iranian civilians in January initiated a slow wake up call for europe. Still only a service level wake up call unfortunately