Kook was also a strong supporter of Israel's constitution, which had been stalled during its writing in 1948 and never completed. Kook claimed that a formal constitution could have solved many ongoing issues in Israeli society, such as discrimination against Israeli Arabs, by providing all of Israel's citizens with a clearly defined, and egalitarian, role in Israeli nationalism. He once remarked that the lack of a constitution was "Israel's greatest tragedy": that Ben-Gurion's decision to change the Israeli governing body from a Constituent Assembly to a Parliament had been a putsch, and that he regretted not having resigned from the Knesset immediately after the decision had been made. Kook also favored the creation of a Palestinian state, albeit one established in modern-day Jordan. He was one of the first Israelis to call for a Palestinian state shortly after the Six-Day War. For the remainder of his life, Kook adamantly claimed that his position would have been shared by his mentor Jabotinsky.