1.N-UNCOUNT 不可数名词 单方面(核)裁军主义 Unilateralism is the belief that one country should get rid of all its own nuclear weapons, without waiting for other countries to do the same.

2.N-UNCOUNT 不可数名词 单边主义 Unilateralism is used to refer to a policy in which one country or group involved in a situation takes a decision or action on its own, without the agreement of the other countries or groups involved.