An autocracy is a system of government in which supreme power is concentrated in the hands of one person, whose decisions are subject to neither external legal restraints nor regularized mechanisms of popular control (except perhaps for the implicit threat of a coup d'état or mass insurrection).[1] Absolute monarchies (such as Saudi Arabia, the United Arab Emirates, Oman, Brunei and Swaziland) and dictatorships (such as Turkmenistan and North Korea) are the main modern-day forms of autocracy.
In earlier times, the term "autocrat" was coined as a favorable feature of the ruler, having some connection to the concept of "lack of conflicts of interests" as well as an indication of grandeur and power. The Russian Tsar for example was styled, "Autocrat of all the Russians", as late as the early 20th century.
The Executive privilege is the privilege bestowed upon the president or a high executive officer to conceal confidential materials and information from the courts, Congress and public.
It is based on the belief that revealing such information may interfere with the ability to govern. Therefore, executive privilege is used to withhold information for the purpose of national security and public interest.
Thus, executive privilege describes the president's refusal to reveal confidential materials based of the belief that it could interfere with their ability to govern.