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

https://www.gov.uk/government/collections/financial-sanctions-regime-specific-consolidated-lists-and-releases

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.

Where is OFAC's country list?​