Russia is at war with Europe. Europe is not yet at war with Russia but it will be in time.
Europe is already in a warm-war with Russia. EU has sent hundreds of thousands of drones used to attack Russia - along with training, intelligence and target guidance. EU airspace is used openly by Ukraine to attack Russia. IMHO, war should be openly declared with clear objectives. That way the Russian €200 billion can be openly seized without all the whining.
On the Russian side however they are carrying out brazen attacks in EU member states and crossing air and maritime boundaries.
Whether the EU should respond in kind is a whole other question.