现代历史学家们一致认为，１９２３年１月发表的孙中山与越飞联合宣言是中国国民党与苏维埃俄国缔结军事政治同盟的直接序幕。然而时至今日，人们还对这一结盟的背景知之甚少。苏联解体后，俄当局开放了历史档案馆，许多过去尘封的档案资料开始面世，为人们更好地研究历史问题 Modern historians agree that the joint declaration of Sun Yat-sen and Yue Fei in January 1923 is the direct conclusion of the conclusion of the military-political alliance between the Kuomintang and Soviet Russia. However, to this day, people still know little about the background of this alliance. After the disintegration of the Soviet Union, the Russian authorities opened the historical archives, many past dusty archives began to appear, for people to better study the history of the issue