The document discusses several key principles and doctrines of international law: 1) The principle of comity refers to nations deferring to each other's laws and judgments as long as they are consistent with their own laws and policies. 2) The act of state doctrine prevents courts from examining the validity of public acts committed by foreign governments within their own territory. 3) Under the Foreign Sovereign Immunities Act, foreign states can be subject to US jurisdiction based on their commercial activities and certain other exceptions.

1. CHAPTER 25 International Law in a Global Economy