INSTEX has done virtually nothing to weaken the sanctions regime.
The EU would have to take much stronger measures if it was really serious about preventing the US from imposing its sanctions regime on European companies. I'm not an expert, so I can only guess at what sort of measures Europe would have to take, but I imagine they would involve reciprocal retaliation for any measures the US takes to punish European companies.
The EU would have to take much stronger measures if it was really serious about preventing the US from imposing its sanctions regime on European companies. I'm not an expert, so I can only guess at what sort of measures Europe would have to take, but I imagine they would involve reciprocal retaliation for any measures the US takes to punish European companies.