According to the Partition Plan for Palestine, when Arabs and Jews were to create states, each was to have a constitution. Israel drafts one but never implements it. In December 1948, a draft of a constitution is released, but never adopted. On June 13, 1950 Israeli leaders decide that the constitution should be legislated chapter by chapter. In lieu of a constitution, Israel’s parliament passes a series of Basic Laws that have become essential foundations of constitutional elements. (source)