Islamic terror group Hezbollah will resign from the Lebanese Cabinet and subsequently topple the country’s government, the Associated Press reports.

The ministers were planning to resign in the afternoon unless Western-backed Prime Minister Saad Hariri – the son of the slain leader – agrees to their demand to convene an urgent Cabinet meeting over the tribunal crisis, Health Minister Mohammed Jawad Khalifeh said on Hezbollah’s Al-Manar TV.

A senior official in Hariri’s Future Movement, Mustafa Alloush, said Hariri would not succumb to “pressure and ultimatums.”

“The prime minister is not opposed to a meeting in principle, but he has commitments outside Lebanon now,” Alloush told The Associated Press. Hariri, whose coalition has been sharing power with the Iranian-backed militant group, was to meet Wednesday with President Barack Obama in Washington to discuss the crisis.

A U.N.-backed tribunal investigating the elder Hariri’s killing is widely expected to name members of the Hezbollah in upcoming indictments, which many fear could re-ignite hostilities between Lebanon’s rival Shiite and Sunni Muslims.

Hezbollah is rightly considered a terrorist group by the United States, United Kingdom, Egypt, Canada, Israel, and Australia. The group also maintains close ties to Iran and Syria and is reported to have contacts with Al Qaeda figures.

Hezbollah accuses the UN-backed tribunal of being an “Israeli project”, which is laughable for anyone familiar with the UN’s recent relations with the Jewish state. Prime Minister Hariri has refused to break ties with the tribunal.

To bring down the government, Hezbollah needs the backing of more than a third of the ministers. Hezbollah and its allies have 10 ministers in the 30-member Cabinet, and an official close to Hezbollah said an 11th minister close to President Michel Suleiman would also submit his resignation.

“It all depends on the prime minister’s response to our call for a Cabinet meeting to discuss the crisis,” the official told the AP, asking that his name not be used because of the sensitivity of the matter. “We are considering our options and a resignation is top of the list.”

One major concern would be Hezbollah encouraging violence in an attempt to destabilize the country in retaliation. But the final decision may not rest with Hezbollah leaders. To quote one former lawmaker:

“At the end of the day, it’s an Iranian decision,” he said.

The late Hariri had the backing of both Sunnis and Christians in his efforts to reduce Syrian influence in his country. He was killed in a suicide bombing that killed 22 other people. Hezbollah, a Shia terror group, is widely believed to have been responsible for the assassination.