The Islamic State of Iraq and The Sham could actually be a state.

TIKRIT, Iraq, June 11 (Reuters) – Sunni insurgents from an al Qaeda splinter group closed in on Iraq’s biggest oil refinery on Wednesday after seizing the northern city of Mosul in a devastating show of strength against the Shi’ite-led government.

Security sources said militants from the Islamic State in Iraq and the Levant (ISIL) – Sunni militants waging sectarian war on both sides of the Iraqi-Syrian frontier – drove into the town of Baiji late on Tuesday in armed vehicles, torching the court house and police station after freeing prisoners.

The militants offered safe passage to some 250 men guarding the refinery on the outskirts of Baiji on condition they leave.

Iraq’s Foreign Minister Hoshyar Zebari called on his country’s leaders to come together to face “the serious, mortal” threat. “The response has to be soon. There has to be a quick response to what has happened,” he said during a trip to Greece.

Zebari said Baghdad would work with forces from the nearby Kurdish autonomous region to drive the fighters from Mosul.

Baiji resident Jasim al-Qaisi said the militants had also asked senior tribal chiefs in Baiji to persuade local police and soldiers not to resist their takeover.

“Yesterday at sunset some gunmen contacted the most prominent tribal sheikhs in Baiji via cellphone and told them: ‘We are coming to die or control Baiji, so we advise you to ask your sons in the police and army to lay down their weapons and withdraw before (Tuesday) evening prayer’.”