<sod >Sir John said the West needed to recognise the balance of power had changed in the world because Russia and China had become more powerful than they were in the past.< eod>< sod > Sir John SawersÃÂ has said the West needsÃÂ to recognise the balance of power hasÃÂ changed in the world because Russia and China haveÃÂ become more powerful than they were in the past.< eod>