http://www.newyorker.com/magazine/2017/03/13/donald-trumps-worst-deal
"The best way to determine if a crime was committed in the Baku deal would be a federal investigation, which could use the power of subpoena and international legal tools to obtain access to the contracts, the due diligence, internal e-mails, and financial documents. The Department of Justice routinely sends investigators to other countries to pursue possible F.C.P.A. and sanctions violations."