A spent force singular noun
Used to say that a person or group that is no longer powerful or influential.
I'm sorry, I am a spent force now. Therefore, I can't help you.
The puppet government has fallen, and it is just a spent force now.
Use one's influence and power to support someone
To be under the control of someone or something
As a person's power increases, his or her sense of morality lessens.
Used to describe something that has great influence or importance
To compel someone to do something