Định Nghĩa và Ý Nghĩa của "(battle|clash) of wills"

What is the origin of the idiom "battle of wills" and when to use it?

The idiom "battle of wills" originated from the concept of individuals or entities engaging in a struggle or conflict based on their strong and opposing desires, intentions, or determination. This expression is mainly used to convey the idea of a confrontation or disagreement where each side is unwavering and resolute in pursuing their own objectives, often resulting in a protracted and intense struggle.