But we do n't know whether analysts had enough credible intelligence on hand at the time to be absolutely sure of the nature of the attack . Critics ask why the attack was not called the work of intelligence right away . Tara ##s : Assessments evolve over time as intel and evaluations of intelligence come in . Analysts must consider multiple and conflicting reports , false leads and claims , she says . Maller : We need to understand the nature of intelligence and risk of false leads .
Critics ask why the attack was not called the work of intelligence right away . Tara ##s : Assessments evolve over time as intel and evaluations of intelligence come in . Analysts must consider multiple and conflicting reports , false leads and claims , she says . Maller : We need to understand the nature of intelligence and risk of false leads .