The Druk Desi (Dzongkha: འབྲུག་སྡེ་སྲིད་, Wylie: 'brug sde-srid; also called Deb Raja)[nb 1] was the title of the secular (administrative) rulers of Bhutan under the dual system of government between the seventeenth and nineteenth centuries.
In Bhutan, the office of Druk Desi was established by the Zhabdrung Rinpoche, Ngawang Namgyal in the 17th century under the dual system of government.
The State Council was a central administrative organ that included regional rulers, the Zhabdrung's chamberlains, and the Druk Desi.
The kingdom was divided into three regions (east, central, and west), each with an appointed penlop (governor), holding a seat in a major dzong.
Furthermore, the Druk Gyalpo appoints the Je Khenpo on advice of the Five Lopons (learned masters), and the democratic constitution itself is the supreme law of the land, as opposed to a Zhabdrung figurehead.