Question: Is the principal assistant to the president in all matters relating to the dod?
Disambiguated questions and answers: question: Is the principal assistant to the president in all matters relating to the dod in general?
Is the principal assistant to the president in all matters relating to the dod from 2017 to 2018?
Is the principal assistant to the president in all matters relating to the dod from 2015 to 2017?
Is the principal assistant to the president in all matters relating to the dod from 2013 to 2015?
answer: Secretary of Defense
The Secretary of Defense
James Norman Mattis
Jim Mattis
Ash Carter
Dr. Ashton Baldwin Carter
Chuck Hagel
Charles Timothy Hagel
Natural Questions answer: The Secretary of Defense (from the Wikipedia article "Organizational structure of the United States Department of Defense")