England captain Alastair Cook, right, with teammate Graeme Swann, watch on during England's game against New Zealand in the Champions Trophy. Philip Brown / Reuters
England captain Alastair Cook, right, with teammate Graeme Swann, watch on during England's game against New Zealand in the Champions Trophy. Philip Brown / Reuters
Champions Trophy: England will play it safe with Graeme Swann
Alistair Cook happy to go with James Tredwell for rest of the tournament, while Michael Clarke warns David Warner he must work hard to win back the trust of the Australia team and the public back home.