Syria and Egypt continue to experience violence between the government and citizens creating potential flash points in either country.
In the meantime, Iran presents the most destablizing scenario of any Middle Eastern country. President Ahmedinajad, through a series of political missteps, faces the very real possibility of being forced to step down. Nepotism and narcism have left the President in a untenable position opposite the powerful Ayatollah. Iran and Saudi Arabia have been the only Middle Easter countries to thus far avoid any of the turmoil from the Arab spring (although Iran is not an Arab state, they are of course Persians).
Ahmedinajad stepping down should in theory reduce tensions with the United States. However, any number of his potential successors can take an ever harder stance against the West. Now comes the news that Iran has secretly been testing missiles capable of carrying nuclear warheads. The Hague has declared this a violation of UN Resolution 1929 which means with the political turmoil in Tehran, tensions could escalate into hostilities.
Iranian Nuclear Missile Test