隋丹.卡廷、伯纳德和托尔斯泰-杜兰使团是20世纪30年代至抗日战争后期陆续进藏的三批美国人,他们增进了美国对于西藏的了解。尤其是托尔斯泰-杜兰使团的西藏之行,首开美国政府派遣官方使团进藏与西藏当局建立直接联系、插手中国“西藏问题”之先例,对于此后美国政府对中国西藏政策的形成和确立发生了很大影响。 Sui Dan The Katyn, Bernard and Tolstoy-Duran missions are the three batches of Americans who successively entered Tibet from the late 1930s to the end of the Anti-Japanese War. They enhanced the United States’ understanding of Tibet. In particular, the Tolstoy-Turangi delegation’s trip to Tibet first opened the precedent that the U.S. government sent official missions to Tibet to establish direct contacts with the Tibetan authorities and to intervene in the “issue of Tibet in China.” In the aftermath of the U.S. government’s policy on Tibet in China The formation and establishment of a great impact.