As the EU and US prepare to impose more sanctions on Russia over Ukraine, BP, which owns almost 20 per cent of Rosneft, the Russian oil group, warns profits could suffer. Lex's Oliver Ralph and Alan Livsey discuss how worried BP shareholders should be.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes