Story highlights Iraqi Prime Minister Haider al-Abadi says ISIS is losing momentum

Mosul has been under ISIS control since June 2014

(CNN) Claiming a victory in Ramadi over ISIS, Iraqi security forces now plan to retake Mosul.

Iraqi Prime Minister Haider al-Abadi told CNN's Christiane Amanpour that Iraqi military and local police forces will work together to make it happen. That cooperation will make it "much, much easier," he said.

He repeated his pledge to give ISIS the boot from Iraq in 2016 "like we surprised the world by liberating al Ramadi -- nobody thought we would, or we can, but we did."

Whether Ramadi has been fully liberated is up for some debate. ISIS fighters may still control up to a quarter of the city

"I think Daesh is losing the momentum," Abadi said, using the Arabic acronym for ISIS.

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