During the
Mandate period in Palestine, Margolis-Kalwariski served on the Arab-Jewish Advisory Council set up by
Herbert Samuel and on the executive of the
Va'ed Le'umi, the National Council of the Palestinian Jewish community. He also directed the Office of Arab Affairs of the
Zionist Executive from 1923 to 1927 and was called upon for mediation efforts after the
1929 uprising. He was a member of
Brit Shalom, a small political group that called for a binational state in Palestine, as well as several organizations which succeeded it, including Kedma Mizraha (Forward to the East), the
League of Arab-Jewish Rapprochement, and
Ihud. == References ==