The binding legal principles established are: (1) A foreign jurisdiction clause in public procurement regulations requiring disputes "relative to" the regulations to be submitted to foreign courts does not extend to private law delictual claims between bidders for wrongful interference, as such regulations govern the exercise of public powers, not private law obligations between bidders. (2) Under section 2(2) of the Foreign States Immunities Act 87 of 1981, a foreign state is indirectly impleaded only where proceedings affect its legal rights or liabilities (such as property rights); proceedings that may have political, moral or reputational consequences do not trigger state immunity. (3) The foreign act of state doctrine in South African common law is not an exclusionary rule but requires a balancing of reasons: courts must weigh deference to foreign sovereign acts (comity) against countervailing reasons for adjudication, including constitutional imperatives. Where serious allegations of corruption involve South African entities and government officials, threatening the constitutional order, the court's section 7(2) duty to combat corruption outweighs reasons for abstention. (4) For choice of law in transnational delicts: the lex loci delicti is the primary rule; where events occur in multiple jurisdictions (transnational delict), the plurality approach applies (law of the place where the greater part of events occurred); the lex loci delicti may be displaced if another jurisdiction has a manifestly closer, significant relationship to the occurrence and parties. (5) The common law, including doctrines of private international law, must be developed consistently with the Constitution's values and the Bill of Rights (section 39(2)).