I doubt Turkey will ever help to stop Israeli border expansion. Israelis are fighting a " HOLY WAR" . Every move against Muslim and killing Muslims is counted as a religious duty. The holiness needs to be countered with Israeli religious set rules. But yes, Arab leaders failed to defend their countries or nations.It's not totally out of the question. Erdogan has expressed an interest in forming an alliance, we don't know exactly what extent. What we do know both Turkey and Iran do not want to see Israel expanding its borders and territorial waters, so the aligned interest is there. Israel is an ally of Greece and Greek Cyprus.
It wouldn't be the first time the region's countries have joined forces against Israel.