we addressed the factual question whether members of the Trump Campaign "coordinat[ed]"—a term that appears in the appointment order—with Russian election interference activities. Like collusion, "coordination" does not have a settled definition in federal criminal law. We understood coordination to require an agreement—tacit or express—between the Trump Campaign and the Russian government on election interference. That requires more than the two parties taking actions that were informed by or responsive to the other's actions or interests. We applied the term coordination in that sense when
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