The above cycle of domain expansion by central agencies may become a serious burden to other bureaucrats if every central agency creates new turfs in the name of new management techniques all the time. One should also note that while bureaucrats may use managerial tools as political instruments to exercise control, the politician who controls the government agency that the bureaucrats are affiliated also stand to gain from the increasing power of the respective bureaucrats. For example, the prime minister may assign a deputy prime minister to be in charge of the national administrative reform office that consists of self-interested bureaucrats who are driven by domain expansion ambitions.