According to Art. 1 of the Vienna Convention on Diplomatic relations, a diplomatic agent is a person acting in pursuance of a duty bestowed upon him by the sending state. He may be the head of the mission or the part of the diplomatic staff accompanying the head of the mission. The two most important terminologies accompanying the definition of diplomatic agents are the sending state and the receiving state. So, the nationality of the diplomatic agent is construed to be the sending state whereas the state into which such a diplomatic agent is sent with a purpose is considered as the receiving state.