Treat them like you would any other human. Otherwise, follow your local laws and make sure not to violate any sanctions or reporting requirements. I don't see

Treat them like you would any other human. Otherwise, follow your local laws and make sure not to violate any sanctions or reporting requirements. I don't see why you would need to think about it more than that. One citizen of a country is not a representative of their government. So either you discriminate based on political viewpoints, or you don't. There is no moral discrimination.