I cannot find an example of 'Deputy Ambassador" in wiki;
https://en.wikipedia.org/wiki/Diplomatic_rank
Bilateral diplomacy
In modern diplomatic practice there are a number of diplomatic ranks below Ambassador. Since most missions are now headed by an ambassador, these ranks now rarely indicate a mission's (or its host nation's) relative importance, but rather reflect the diplomat's individual seniority within their own nation's diplomatic career path and in the diplomatic corps in the host nation:
Ambassador (High Commissioner in Commonwealth missions to other Commonwealth countries); ambassador at large
Minister
Minister-Counsellor
Counsellor
First Secretary
Second Secretary
Third Secretary
Attaché
Assistant Attaché
United States Foreign Service
In the United States Foreign Service, the personnel system under which most U.S. diplomatic personnel are assigned, a system of personal ranks is applied which roughly corresponds to these diplomatic ranks. Personal ranks are differentiated as "Senior Foreign Service" (SFS) or "Member of the Foreign Service".[6]
The SFS ranks, in descending order, are:
Career Ambassador, awarded to career diplomats with extensive and distinguished service;
Career Minister, the highest regular senior rank;
Minister-Counselor; and
Counselor.
In U.S. terms, these correspond to four-, three-, two- and one-star general and flag officers in the military, respectively. Officers at these ranks may serve as ambassadors and occupy the most senior positions in diplomatic missions.
Members of the Foreign Service consist of five groups, including Foreign Service Officers and Foreign Service Specialists.[7] Like officers in the U.S. military, Foreign Service Officers are members of the Foreign Service who are commissioned by the President.[8] As with Warrant Officers in the U.S. military, Foreign Service Specialists are technical leaders and experts, commissioned not by the President but by the Secretary of State.[9] Ranks descend from the highest, FS‑1, equivalent to a full Colonel in the military, to FS‑9, the lowest rank in the U.S. Foreign Service personnel system.[10] (Most entry-level Foreign Service members begin at the FS‑5 or FS‑6 level.) Personal rank is distinct from and should not be confused with the diplomatic or consular rank assigned at the time of appointment to a particular diplomatic or consular mission.
In a large mission, several Senior Diplomats may serve under the Ambassador as Minister-Counselors, Counselors, and First Secretaries; in a small mission, a diplomat may serve as the lone Counselor of Embassy.
sorry dude ... he is a NO Body ... a bull#### position to cover for CIA Operations