` ` situation is serious , '' warns intelligence briefing on Taliban in Afghanistan . ` ` Security incidents '' up to 500 per week in 2009 , from 40 per week five years earlier . Among the Taliban 's motivations , according to interrogations of the captured insurgents : . Detainees say are trying to distance themselves from al Qaeda , the briefing says . CNN obtained the December report by top US intelligence official in Afghanistan .
` ` situation is serious , '' warns intelligence briefing on Taliban in Afghanistan . ` ` Security incidents '' up to 500 per week in 2009 , from 40 per week five years earlier . Detainees say are trying to distance themselves from al Qaeda , the briefing says . CNN obtained the December report by top US intelligence official in Afghanistan .