A cargo ship is set to leave Ireland for Russia with alumina, a white powder that experts say is likely used to make weapons. The alumina comes from a plant in southern Ireland partially owned by a Russian oligarch with ties to Vladimir Putin. Despite European sanctions against Russia, alumina is not a sanctioned product. Irish officials claim there's no evidence alumina from the Aughinish refinery is used in military supplies, but the government has declined to make public the findings of an investigation into the alumina shipments. Ireland is facing calls to stop the shipments as dozens of European leaders gather in Dublin this week to discuss support for Ukraine.