Editor’s Note: This is part one of a two-part investigation into Cambridge Analytica/SCL’s global operations. The second installment will be published on Truthdig on Tuesday. Internal documents exclusively obtained by the Grayzone Project and embedded at the end of this article show how Cambridge Analytica’s UK-based parent company, SCL group, conducted a surveillance operation in Yemen, using psychological profiling, “strategic communications campaigns,” and infiltration of foreign operativ...