Head of the TNF (Tumor Necrosis Factor ) research group at the Weizmann Institute for Science, Rehovot, Israel and president of the International Cytokine Society
Author of "Meori Galicia: The Encyclopedia of Galician Rabbies and Scholars".
Historian of nationalism in Eastern Europe and Russuan Jewry.
The Leonid Nevzlin Research Center for Russian and East-European Jewry
The Chais Center for Jewish Studies in Russian, The Hebrew University
Author of the autobiography "Until the Sun Came" (in Hebrew), 2010