C.I.A. Admits to Losing Informants

The warning, according to those who have read it, was primarily aimed at front line agency officers, the people involved most directly in the recruiting and vetting of sources. The cable reminded C.I.A. case officers to focus not just on recruiting sources, but also on security issues including vetting informants and evading adversarial intelligence services. Among the reasons for the cable, according to people familiar with the document, was to prod C.I.A. case officers to think about steps they can take on their own to do a better job managing…