Members of the international coalition fighting the "Islamic State of Iraq and the Levant" (ISIL) in Iraq and Syria on Wednesday (July 20th) agreed on a plan to corner the group in its final bastions, AFP reported.

Defence ministers from the Arab and Western countries of the coalition meeting in Washington, D.C., to assess the situation said they have a military plan to liberate the cities with local Iraqi and Syrian forces.

An accelerated military effort will soon see the group pushed back to al-Raqa in Syria and Mosul in Iraq, US Defense Secretary Ashton Carter said on the sidelines of the two-day meeting, without revealing details of the plan.

French defense minister Jean-Yves le Drian said the battle for Iraq and Mosul also is key for the future security of Europe's cities, where ISIL has conducted a string of attacks.

"ISIL is not only a terrorist army that has seized territory," he said, referring to the swaths of Iraq and Syria under the group's control. "It is also from this territory that it has launched both the operations ordered by terrorists that France has suffered (and) also propaganda efforts."

Meanwhile, donor countries are set to pledge up to $2 billion towards the cost of rebuilding Iraq and insulating its communities from extremism, officials said.