The aluminium market service short term outlook (STO) is published monthly and provides a forecast of aluminium supply and demand fundamentals over the next two-years. April turned out be a tumultuous month for the aluminium market. The market was still assessing the impact for global metal trade flows following the announcement of US Section 232 tariffs on aluminium, when on 6 April the US Treasury imposed sanctions on Rusal. The sanctions were unprecedented in their direct impact on the aluminium market and had the potential to be a permanent game changer for the aluminium market. The subsequent deadline extension has calmed market jitters for the time being. However, we expect volatile market conditions over the coming months.