The first secret order authorized by the court that handles the Foreign Intelligence Surveillance Act (FISA) began after Manafort became the subject of an FBI investigation that began in 2014. It centered on work done by a group of Washington consulting firms for Ukraine’s former ruling party, the sources told CNN. The surveillance was discontinued at some point last year for lack of evidence, according to one of the sources. The FBI then restarted the surveillance after obtaining a new FISA warrant that extended at least into early this year. (…) Some of the intelligence collected includes communications that sparked concerns among investigators that Manafort had encouraged the Russians to help with the campaign, according to three sources familiar with the investigation. Two of these sources, however, cautioned that the evidence is not conclusive. It was that second warrant that also led to Manafort’s house and