Anti Money Laundering Resource Centre
The active sanctions links below are dynamic and liable to change and therefore it advisable to check the US Sanctions List https://www.treasury.gov/resource-center/sanctions/Programs/Pages/Programs.aspx ) and UK Sanctions List https://www.gov.uk/government/collections/financial-sanctions-regime-specific-consolidated-lists-and-releases directly.
UK Sanctions List
US Sanctions List
Sanctions Programs and Country Information (sourced from the US Department of Treasury - https://www.treasury.gov/resource-center/sanctions/Programs/Pages/Programs.aspx)
OFAC administers a number of different sanctions programs. The sanctions can be either comprehensive or selective, using the blocking of assets and trade restrictions to accomplish foreign policy and national security goals.