A junta can do it, using their military power to overtly or covertly control decisions at the highest level.
Markov still calls Ukrainian officials “the junta,” enemies.
And now the protestors have declared independence from what they call the “junta rulers” in Kiev, the capital.
a closely knit group; clique; also called junto
Latin jungere 'to join'
1620s, "Spanish legislative council," from Spanish and Portuguese junta "council, meeting, convention," from Medieval Latin iuncta "joint," from Latin iuncta, fem. past participle of iungere "to join" (see jugular).
Meaning "political or military group in power" first recorded 1640s as junto (from confusion with Spanish nouns ending in -o), originally with reference to the Cabinet Council of Charles I. Modern spelling in this sense is from 1714; popularized 1808 in connection with councils formed across Spain to resist Napoleon.
A group of military leaders who govern a country after a coup d'état.