21. How do I know what specific changes have been made to OFAC's Specially Designated Nationals (SDN)List?

All changes for the current calendar year are cumulatively available in a .PDF file and in a text version. The entire list may also be browsed using OFAC's Sanctions List Search Tool​. Cumulative changes for prior years back to 1994 are also available in ASCII format by following this link. The same link will take you to a *.PDF version of the file for calendar years back to 2001.