Andy Farrell hailed Ireland's ruthlessness and composure after their Guinness Six Nations title defence was launched with a record-breaking five-try demolition of 14-man France.The reigning Grand Slam champions propelled themselves into pole position for further championship glory by dismantling the ragged pre-tournament favourites 38-17 in Marseille.Ireland's bonus-point success, secured by tries from Jamison Gibson-Park, Tadhg Beirne, Calvin Nash, Dan Sheehan and Ronan Kelleher, plus 13 points

Andy Farrell hailed Ireland's ruthlessness and composure after their Guinness Six Nations title defence was launched with a record-breaking five-try demolition of 14-man France.The reigning Grand Slam champions propelled themselves into pole position for further championship glory by dismantling the ragged pre-tournament favourites 38-17 in Marseille.Ireland's bonus-point success, secured by tries from Jamison Gibson-Park, Tadhg Beirne, Calvin Nash, Dan Sheehan and Ronan Kelleher, plus 13 points from Jack Crowley, was their largest winning margin away to France.