One of four Italian soldiers wounded in a firefight with Afghan insurgents Thursday has died in hospital, taking Italy\'s death toll in the eight-year NATO-led ISAF mission to 52. Alpine Brigade Corporal Tiziano Chierotti, 24, from the northwestern costal town of Sanremo, had surgery on abdominal wounds but \"nothing could be done,\" military sources said in Rome. The three other Alpine soldiers were hit in the legs and their conditions are not life-threatening, the sources said. Sending his condolences to Chierotti\'s family, Defence Minister Giampaolo Di Paola said Italy would stay the course with its US-led allies until the handover to Afghan forces is completed in 2014.