In addition, it is the Crown's prerogative to declare war, make peace, and direct the actions of the military, although the Prime Minister holds "de facto" decision-making power over the armed forces. The Royal Prerogative also extends to foreign affairs: the Sovereign or Governor-General may negotiate and ratify treaties, alliances, and international agreements; no parliamentary approval is required. However, a treaty cannot alter the domestic laws of the Antigua and Barbuda; an Act of Parliament is necessary in such cases. The Governor-General, on behalf of the Queen, also accredits Antiguan and Barbudian High Commissioners and ambassadors, and receives diplomats from foreign states. In addition, all Antiguan and Barbudian passports are issued in the Monarch's name. In Antigua and Barbuda major public inquiries are called Royal Commissions, and are created by the Cabinet on behalf of the Monarch through a Royal Warrant.