By the decree of RA President Serzh Sargsyan, Tigran Sargsyan has been granted the diplomatic ranking of Ambassador Extraordinary and Plenipotentiary of the Republic of Armenia. By another presidential decree, Tigran Sargsyan has been appointed Ambassador Extraordinary and Plenipotentiary of the Republic of Armenia to the United States of America (seat in Washington).

By another presidential decree, Tatul Margaryan has been relieved of the obligations of Ambassador Extraordinary and Plenipotentiary of the Republic of Armenia to the United States of America, as posted on the official website of the RA President.