The dimensions of the unfolding disaster in Afghanistan are becoming bigger and more daunting by the day. Once-staunch defenders of the "good war" are starting to break ranks. Kim Howells, a former Foreign Office minister with responsibility for Afghanistan and current chairman of the parliamentary intelligence and security committee, questions in our newspaper today the central tenet of the government's case for fighting in Afghanistan: that it is the frontline of a war that would otherwise be conducted on British streets. Mr Howells said counter-terrorism would be better served by bringing the majority of servicemen home. Better, he argues, to concentrate on protecting our borders and gathering intelligence at home and abroad.