Many European countries have been caught off guard by unprecedented Russian aggression against Ukraine and, for the time being, the European states are right on their way to strengthening their defence capabilities. Flooding Ukraine with weaponry remains the top priority nowadays, precipitating worthy efforts to make this weapons transfer happen. This Info Flash seeks to outline Europe’s options to face up to challenges posed by the Kremlin in terms of its military capabilities. The IF will review the 'war-economy' dimension of the Russian aggression against Ukraine, attending to its impact on arms manufacture and sales.