By contrast, I believe that the Quartet retains its validity and relevance thanks to its unique combination of legitimacy, political strength and financial and economic power represented by the Russian Federation, the European Union, the United States and the United Nations.
相反我认为，由于俄罗斯联邦、欧洲联盟、美国和联合国四方特有的合法地位、政治势力以及财政和经济力量，四方依然有效，仍然有作用。