[gerty]

Oh, please, cry me a river. There's always a law to bomb another country, spy on the RoW, hack ally infrastructure, renege international treaties or put on some tariffs on imports from friendly countries, but somehow a minor contractual clause grinds to a halt export of vital medicine supplies during a pandemic.

[quickthrowman]

There’s a distinction to point out here. US courts enforce contract law, but the international political system is anarchic. Contractual breach cases have a venue willing to hear their case, your examples of actions taken against nation-states by the US government do not.