Obviously it depends on the sanction in question, but many/most sanctions are multilateral and I don’t know of any which are currently US-only. The UN security

Obviously it depends on the sanction in question, but many/most sanctions are multilateral and I don’t know of any which are currently US-only. The UN security council for example is considered to have a mandate to decree international sanctions against a nation. Here is the UN’s sanctions info https://www.un.org/securitycouncil/sanctions/information https://www.un.org/securitycouncil/sanctions/information