The Taliban have captured the crucial southern Afghan city of Sangin after a year-long battle. Afghan forces say they have made a tactical retreat from the centre of Sangin. <br/><br/>A spokesman for Helmand's Governor confirmed the district police and governor's headquarters are now in militant hands. Almost a quarter of British troops killed during the UK's combat mission in Afghanistan died defending Sangin.<br/><br/>Hundreds of Afghan combatants have been killed there in recent fighting.