Collecting Loans from Gentiles

"From the foreigner you shall pursue a debt"Deuteronomy 15:3.

We are commanded to press a gentile to repay a debt that he owes us, and not to have mercy on him [and give him an extension]—as we are commanded regarding a Jew.

[This commandment only applies to a gentile who has not accepted upon himself the observance of the Seven Noahide Laws.]