what countries are subject to a u s embargo 
trade with cuba north korea iran and syria is prohibited under broad u s embargoes u s restrictions on trade with russia and ukrainian territories under russian occupation have also been described as an embargo 13can an embargo be effective embargos have been more effective in punishing the targeted country than in changing its policies though trade was included in the economic sanctions credited for encouraging south africa to end apartheid the trade sanctions imposed on russia following its 2022 invasion of ukraine have been credited for disrupting russian military supplies 