Estonia has launched a diplomatic push within the EU to tighten economic pressure on Moscow. Capitalizing on ongoing negotiations for the EU’s 21st sanctions package, Tallinn is targeting the raw materials feeding Russia’s aviation sector and the maritime services keeping its energy revenues afloat. Closing the alumina loophole Estonian Foreign Minister Margus Tsahkna announced on X that Tallinn has formally submitted a proposal to outlaw all EU exports of alumina to Russia. Alumina serves as the foundational chemical input required to smelt aluminum, a metal of immense strategic value to the Kremlin’s contemporary defense grid.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. “Russia’s defense industry depends on aluminum, and aluminum depends on alumina,” Tsahkna stated. “Estonia has proposed introducing an EU export ban on alumina to Russia. If we truly intend to raise the price of aggression, we must eliminate this loophole.” By embedding this embargo within the 21st sanctions package, Estonia aims to directly choke the supply chains feeding Russia’s state aerospace corporations, missile production facilities, and heavy armor manufacturing plants. Targeting maritime services and the oil cap While raw materials represent a new front in the sanctions regime, Tsahkna emphasized that energy exports remain the primary financial artery sustaining the Russian military machine. To paralyze this cash flow, Estonia is advocating for a maritime blockade.