nuclear option
noun/ˈnjuːkliər ɒpʃn/
/ˈnuːkliər ɑːpʃn/
(politics)- the most extreme possible response to a particular situation
核选择（指可能做出的最极端反应） - Currency controls would be the nuclear option.
货币管制将是最极端的选择。
- Currency controls would be the nuclear option.