scorched earth policy
noun
1- a military strategy of burning or destroying crops or other resources that might be of use to an invading enemy force焦土政策（入侵敌军采用的一种军事战略）。
1.1
- figurative a strategy that involves taking extreme action〈喻〉极端策略：
a lawyer renowned for his scorched earth policy in matrimonial cases.
一名以采用极端策略审理婚姻案件著称的律师。