coup d'état

US /ˌkuː deɪˈtɑː/
UK /ˌkuː deɪˈtɑː/
"coup d'état" picture
1.

a sudden, violent, and illegal seizure of power from a government

:
The military launched a coup d'état, overthrowing the elected government.
Rumors of a potential coup d'état spread throughout the capital.