The Director of the Office of Foreign Missions shall, by regulation, establish liability insurance requirements which can reasonably be expected to afford adequate compensation to victims and which are to be met by each mission, members of the mission and their families, and individuals described in section 19 of the Convention on Privileges and Immunities of the United Nations of February 13, 1946, relating to risks arising from the operation in the United States of any motor vehicle, vessel, or aircraft.