Coren studied law at university, and was certified a s a lawyer. Whilst a student he was amongst the leadership of the Romanian Zionists Student Association. He served as secretary of Tze'irei Zion and was a member of the Zionist Federation of Bessarabia's presidium, editing their Yiddish language newspaper. On 1 May 1940 he made aliyah to Mandatory Palestine and became amember of the Haganah. Between 1941 and 1943 he worked as director of the Department of Information and Organization of the Histadrut's Supply Centre, before serving as sec- retary of the Moshavim Movement between 1944 and 1961. In 1949 he was amongst the founders of the "From Maabarot to Village" settlement project In 1959 Coren was elected to the Knesset on the Mapai list. He retained his seat in the 1961 elections, and was appointed Deputy Minister of Finance in the tenth government on 30 May 1952, serving until the government left office on 26 June the following year. He lost his seat it in 1965, but returned to the Knesset on the Alignment list (an alliance of the Labor Party (formed by a merger of Mapai, Ahdut HaAvoda and Rafi) and Mapam) following the 1969 elections, but lost his seat again in 1973. Between 1964 and 1979 he served as secretary of the World Union of Labor Zionists. Since the mid-1940s, he has written several books of essays, critically analyzing the history of Bessarabian Jews, especially in Yiddish, but also in Hebrew and Spanish.