Treaties — Conclusion and operation of — Operation and enforcement of — Necessity for municipal legislation — Treaty of Commerce providing for method of payment for goods imported and exported by individuals — Payment to be made through clearing arrangement — Whether foreign State can bring action in courts of co-contracting State for enforcement of clearing agreement — Provisions of treaty not incorporated in lex fori — Whether impliedin contracts between private parties for sale of goods — The law of Sweden.

States as international persons — In general — Recognition of acts of foreign States and Governments — Public law — Exchange control legislation — Treaty of Commerce providing for method of payment for goods — Payment to be made through clearing arrangement — Whether foreign State can bring action for enforcement of clearing agreement — Whether impliedly incorporated in private contract — Whether substantially a claim to enforce foreign exchange control legislation — Whether of a public law character — The law of Sweden.