When the Dragons' negotiations get messyTo play this video you need to enable JavaScript in your browser.This video can not be playedWhen the Dragons' negotiations get messyCloseWatch the full episode on BBC iPlayer.SectionNewsPublished1 day agoShareclose panelShare pageCopy linkAbout sharingRelated topicsInventionsFollow Inventionsclose panelYou are now following InventionsUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description