Submissions are invited to ** CMNA 2017, the 17th workshop on Computational Models of Natural Argument ** 16 June 2017, London, UK EXTENDED DEADLINE 21st April 2017 PUBLICATION ANNOUNCEMENT: extended versions of selected accepted papers will be published in a special issue of Argument and Computation http://www.iospress.nl/journal/argument-computation/ Key dates are as follows: * Paper submission (all categories): Extended 21 April 2017 * Notification to authors: 11 May 2017 * Final version of papers: 31 May 2017 * Early registration deadline: see the ICAIL website at https://nms.kcl.ac.uk/icail2017/ * CMNA 17: 16 June 2017 Submissions are handled by EasyChair: https://easychair.org/conferences/?conf=cmna170 Please visit http://cmna.info//CMNA17/ for more information.