(A) Commander in Chief
(B) ** Diplomat
(C) Secretary of Defense
(D) Chief Executive
EXPLANATIONS BELOW
Concept note-1: -a person who officially represents a country’s interests in a foreign country: She is a skilled diplomat and an expert negotiator.
Concept note-2: -An ambassador is the highest-ranking diplomatic officer, designated by the government as its resident representative in a foreign state or before an international organization.
Concept note-3: -An ambassador is the ranking government representative stationed in a foreign capital or country. The host country typically allows the ambassador control of specific territory called an embassy, whose territory, staff, and vehicles are generally afforded diplomatic immunity in the host country.
Concept note-4: -Ambassador. An ambassador is a head of mission who is accredited to the receiving country’s head of state. They head a diplomatic mission known as an embassy, headquartered in a chancery usually in the receiving state’s capital.
Concept note-5: -A diplomatic mission or foreign mission is a group of people from a state or organization present in another state to represent the sending state or organization officially in the receiving or host state.