► Read more at https://on.ft.com/2PxnW0n<br /><br />The US is investing in robotics and artificial intelligence as it races against China to develop the weapons of the future. The FT’s US foreign policy and defence correspondent Katrina Manson visits the US Army Research Lab to meet the scientists working on the latest tech developments.<br /><br />Subscribe to FT.com here: http://bit.ly/2GakujT<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 />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes