Military planners now think they may need to send more than double the number of extra troops initially believed necessary for the war in Afghanistan.
Two defense officials spoke on grounds of anonymity Wednesday. They said the buildup in the increasingly violent campaign could now amount to more than 20,000 additional troops. Officials had been saying for months that they needed more trainers and two more combat brigades -- some 10,000 people.
Officials said they had to speak on the basis of anonymity because they were not ready to publicly discuss specific troop levels.