The DRS has been made mandatory in all international games© Getty Images The ICC\'s chief executives\' committee has unanimously agreed to make a modified version of the Decision Review System (DRS) mandatory in all Tests and one-day internationals. The mandatory terms and conditions for the DRS that have now been recommended to the Executive Board for approval on Tuesday will now consist of infra-red cameras and audio-tracking devices with the \"ball-tracker\" having been removed from the ICC\' More