Sanction and export controls are used by governments around the world as a means to further their foreign policy and national security interests, not just the US. Further these regulations always govern both the export and re-export of the goods and services being sold. They are useless otherwise.

This is playing out right now in the EU with Switzerland and Germany debating allowing armaments to be re-exported to Ukraine.[1]

[1] https://www.politico.eu/article/switzerland-rethinks-neutral...