The Royal Prerogative also extends to foreign affairs: the sovereign or the governor-general conducts treaties, alliances and international agreements on the advice of the Cabinet. The governor-general, on behalf of the Queen, also accredits New Zealand high commissioners and ambassadors, and receives similar diplomats from foreign states. The letters of credence and recall were formerly issued by the monarch, but now are issued in the name of the incumbent governor-general (instead of following the usual international process of the letters being from one head of state to another). The issuance of passports falls under the Royal Prerogative, and, as such, all New Zealand passports are issued in the monarch's name and remain her property.