Tsuyoshi Hasegawa

is an American historian specializing in modern Russian and Soviet history and the relations between Russia, Japan, and the United States. He taught at the University of California, Santa Barbara, where he was director of the Cold War Studies program until his retirement in 2016.

Hasegawa was born in Tokyo and received his undergraduate education at Tokyo University. He studied international relations and Soviet history at University of Washington, where he earned his doctoral degree in 1969. He became a naturalized American citizen in 1976. Among his awards and fellowships are Fulbright-Hays Research Abroad (1976–77), NEH grant (2002–03), SSRC grant (2002–03), Rockefeller Belagio Center Fellowship (2011), and a Fulbright Fellowship (2012).

He is known for ''Racing the Enemy: Stalin, Truman, and the Surrender of Japan '' (2005), a study of diplomacy and the end of the allied war against Japan. The book won the 2005 Robert Ferrell Award from the Society for Historians of American Foreign Relations (SHAFR).

Hasegawa's research also includes the political and social history of the Russian Revolution of 1917 and of Japanese–Soviet relations. Provided by Wikipedia