This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book reviews the theoretical framework for the study of immigration and ethnicity. It addresses issues of transnationalism, immigration, and the reconstruction of ethnic identities, multiculturalism, tribalism, and tribal identities. The book analyses the historical background and evolution of Israeli society with reference to the various sociological approaches to issues of immigration, ethnicity, and the rifts in Israeli society—ethnic, religious, and national. It discusses the background of the Jewish community of the former Soviet Union, the successive waves of immigration from this community, and the special characteristics of the 1990s immigrants as compared to other waves of immigration to Israel. The book describes the patterns of identity and ethnic formation among the Russian immigrants and their location on the ethnic map in Israel.