Foreign Minister Gabrielius Landsbergis has expressed his condolences on the death of the former diplomat.
Born in Sweden in 1945 to a family of Lithuanian immigrants, Misiunas studied and began his professional career as a historian in the United States.
Misiunas, a staunch advocate of Lithuania's independence from the Soviet Union, co-authored the monograph on The Baltic States: The Years of Dependence, 1940-1980 with Professor Emeritus Rein Taagepera of Tartu University.
From 1996 to 2001, Misiunas served as Lithuania's ambassador to Israel and was accredited to South Africa.
He contributed significantly to the development of Lithuania's bilateral relations with Israel and other Middle Eastern countries, being Vilnius' only diplomatic representative in the region at that time, according to the ministry.