By Ewa Manthey at ING Global aluminium prices briefly rallied after news that the United States is considering an effective ban on Russian imports of the metal in response to the conflict in Ukraine. This comes at a time when the LME is also discussing the possibility of banning Russian metal from its warehouses. Metals have been mostly spared in the rounds of sanctions imposed on Russia that followed its invasion of Ukraine on 24 February. The news of a potential US ban has revived memories of the chaos in the aluminium market that ensued when the US administration placed sanctions on Russian…