An american economist said that protective duties and tariff wars are no less costly than armed peace or real warfare 一位美国经济学家说，保护关税和关税战所造成的损害不亚于武装和平或真正的战争。
2.
The prisoner dilemma of tax competition and the tariff war all show that tax legislation or policy of a country already become the result of tax game as its affect overstepping country frontier 国家间囚徒困境式的税收竞争以及wto背景下的关税战都说明，一国税收立法和税收政策的变动已超出国界的范围，成为国家间博弈的结果。
