Candidate of History, Ivan Franko State University, Lviv, 1975. Doctor of History, Institute History Ukraine National Academy of Sciences of Ukraine, Kiev, 1993.
Assistant department history of southern and western Slavs Ivan Franko State University, Lviv, 1974—1978, assistant professor department history of southern and western Slavs, 1978—1997, professor department Slav countries history, 1997, chief department Slav countries history, since 1997. Expert higher degree commission Vyshcha Atestacijna komisija Ukrainy, Kiev, since 2001. Expert on master's program Ministry Education and Science of Ukraine, Kiev, since 2004.
Expert international programs American Council Learned Societies, New York.
Member of The Ukrainian History Association (chief Lviv center 2001-2006), Academy History Science Ukraine.
Married Ivanna Mychajlivna Kysil, February 20, 1971. Children: Oksana Leonidivna, Andrij Leonidovych.