The active sanctions links below are dynamic and liable to change and therefore it advisable to check the US Sanctions List ) and UK Sanctions List  directly. 

UK Sanctions List

US Sanctions List

Sanctions Programs and Country Information (sourced from the US Department of Treasury - )

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.