Political fragmentation: world war two/arab revolt of 1936 1939. Endless squabbling between haj amin al-hussayni and rival leaders (rivalries) Tensions between arab governments and palestinian leaders were aggravated in wwii. Jordan palestinians who resided in the west bank: prior to the six-day war, arab states competed with one another to prove their anti-israel credentials. Soviets facilitate the beginning of the war (compelling nasser to close gulf of aqaba, mobilize troops in sinai, and kick out un peacekeeping forces) Internal instability of arab regimes (tensions to 1967): novelty of political institutions, most rulers were military officers that were used to seizing power by force, or inherited. Several arab states in 1967 were only 20 or 30 years old the throne (therefore little experience: arab leaders were vulnerable to domestic challenges, militant rhetoric backfired (leaders were expected to match their words with deeds) Jews were only allowed to enter palestine after 1920 because the british were in military control.