Since Russia invaded Ukraine in late-February 2022, the U.S. and its allies have responded with far-reaching economic sanctions, export controls, and other actions. In March, government officials described a coordinated effort to enforce these measures through cross-border investigations followed by criminal and regulatory penalties. Without disputing the validity of those objectives, companies and individuals in New Jersey and elsewhere face complex questions regarding the quickly evolving sanctions environment and business exposure to the Russian economy. In anticipation of the need to advise clients on sanctions compliance, the possibility of enforcement actions, and during criminal investigations, this article discusses strategies for discovery litigation in the types of cases the Department of Justice (DOJ) has forecast.