bell the cat

Translations
взять на себя рискованное дело
Everyone agreed it was a great idea, but who would bell the cat?
Все согласились, что это отличная идея, но кто возьмется за это рискованное дело?
Definitions
To undertake a difficult or dangerous task that others are unwilling to do, especially one that involves confronting a powerful person or problem. The phrase originates from a fable in which mice propose putting a bell on a cat to be warned of its approach, but none are willing to do the risky job.