As part of his strategy for isolating the radical mullah-ruled government of Iran in the world community, President Trump has announced plans to issue a 25% tariff against all countries that continue to do business with the current Iranian regime. This is a counterproductive approach for three reasons. First, and most immediately, this kind of threat hurts the Administration’s case in defending its program of IEEPA tariffs, the country-by-country process of negotiating trade deals based on the “reciprocal tariff” approach that the President came up with in 2025. As revolutionary and unanticipated as that idea was, it has produced a...