Your browser does not support playing this file but you can still download the MP3 file to play locally. Since the second inauguration of US President Donald Trump, the dollar has been in a slow but persistent decline. Today on the show, Katie Martin and Rob Armstrong try to figure out what is happening and if it will continue. For a free 30-day trial to the Unhedged newsletter go to: https://www.ft.com/unhedgedoffer. You can email Robert Armstrong and Katie Martin at unhedged@ft.com.