Boris Romanovich Rotenberg Boris Romanovich Rotenberg Boris Romanovich Rotenberg (, born in Leningrad on 3 January 1957) is a Russian business man and oligarch. He is co-owner (with his brother Arkady Rotenberg) of the SGM (StroyGazMontazh) group, the largest construction company for gas pipelines and electrical power supply lines in Russia. He was listed by Forbes as Russia's 69th wealthiest person in 2016 with a net worth of $1.07 billion. He is considered a close confidant of president Vladimir Putin. Rotenberg was very involved in martial arts between 1968 and 1978, particularly judo. He trained alongside Vladimir Putin and won several awards for
Mordechai Rotenberg Mordechai Rotenberg Mordechai Rotenberg (1932 - ) () is an Israeli professor of social work at the Hebrew University of Jerusalem. Mordechai Rotenberg was born in Breslau, Germany (today Wrocław, Poland). His father was from Warsaw, descended from Rabbi Yitzchak Meir Alter, the founder of the Hasidic sect. His father owned a publishing house in Breslau. In 1939, on the eve of World War II, the family immigrated to Palestine. Rotenberg's father opened a small printing press in Jerusalem. Rotenberg grew up in a Haredi household, with three brothers and a sister. In 1960, he graduated from the Hebrew University.