British troops to leave Sangin district of Afghanistan 's Helmand province . U.S. Marines will take over in Sangin , British defense secretary says . British forces will move to central part of Helmand . Score: 6 Analyst says move is not a defeat and that it makes sense .
British troops to leave Sangin district of Afghanistan 's Helmand province . U.S. Marines will take over in Sangin , British defense secretary says . British forces will move to central part of Helmand . NEW : Analyst says move is not a defeat and that it makes sense .