► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />The US government has been shut down. The risk of a debt default looms. Simon Derrick, chief forex strategist at BNY Mellon, explains to John Authers that Washington's political dysfunction could be the trigger for investors to realise that climbing US stock markets are no longer supported by international fund flows.<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
