I would leave it as it is
see example below


ACTS JURE IMPERII AND JURE GESTIONIS. - "There are two conflicting concepts of sovereign immunity, each widely held and firmly established. According to the classical or absolute theory, a sovereign cannot, without its consent, be made a respondent in the Courts of another sovereign. According to the newer or restrictive theory, the immunity of the sovereign is recognized only with regard to public acts or acts jure imperii of a state, but not with regard to private act or acts jure gestionis. x x x Certainly, the mere entering into a contract by a foreign state with a private party cannot be the ultimate test. Such an act can only be the start of the inquiry. The logical question is whether the foreign state is engaged in the activity in the regular course of business. If the foreign state is not engaged regularly in a business or trade, the particular act or transaction must then be tested by its nature. If the act is in pursuit of a sovereign activity, or an incident thereof, then it is an act jure imperii, especially when it is not undertaken for gain or profit." The service contracts referred to by private respondent have not been intended by the ADB for profit or gain but are official acts over which a waiver of immunity would not attach.