Questions over the role of one of Ireland’s biggest industrial sites in Russia’s war economy moved sharply into focus after EU foreign policy chief Kaja Kallas said the facts around Aughinish Alumina must be fully established, while making clear that Brussels is relying on Ireland to carry out the investigation. The Limerick-based refinery is under scrutiny amid allegations that alumina shipped from the plant ultimately reaches Russia’s war machine, supporting a campaign that has killed thousands in Ukraine. Speaking on…