► Subscribe to FT.com here: http://bit.ly/2r8RJzM<br /><br />Oil prices have now dropped by more than 20% since the start of this year, with Brent on course to post its worst first half since 1997 as energy stocks are hit hard.<br /><br />► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
