This document summarizes the key differences between US and EU export control and sanctions enforcement and voluntary self-disclosures. It outlines when US trade controls are relevant to non-US transactions, how EU controls interact with US rules, and enforcement practices in both the US and EU. The document advises considering factors like risk of discovery, board awareness, and legal implications when deciding whether to make a voluntary self-disclosure of violations. Thorough preparation and full disclosure are recommended if a self-disclosure is made.