A political or diplomatic term referring to the principle of conducting relations between two nations on a reciprocal basis.
Bilateralism is a fundamental diplomatic policy that respects the interests of both countries.
Refers to multilateralism, involving multiple nations, as opposed to the two-nation focus of 二国間相互主義.
Compound of 二国間 (between two countries) + 相互 (mutual) + 主義 (principle). A straightforward Sino-Japanese term for bilateralism.