Officially, Kazakhstan is a democratic, secular, constitutional unitary republic; Nursultan Nazarbayev led the country from 1991 to 2019. He was succeeded by Kassym-Jomart Tokayev. The president may veto legislation that has been passed by the parliament and is also the commander in chief of the armed forces. The prime minister chairs the cabinet of ministers and serves as Kazakhstan's head of government. There are three deputy prime ministers and sixteen ministers in the cabinet.