The London Metal Exchange (LME) has banned the delivery of Russian metal following tough sanctions imposed by the US and UK. The LME is a central market for metals such as aluminium, copper, and zinc. If the supply taps are turned off, prices will likely rise as they did overnight, e.g. over 90% of the aluminium on the LME is of Russian origin. However, prices have a tendency, just like water, to move in the path of least resistance and with plenty of buyers still happy to take delivery of Russian metal, by whatever means, advances are likely to be controlled in nature, assuming they do occur.