On Monday, Kurdish-led coalition forces battled to clear the village of Baghouz, where the remaining jihadis are holed up in fortified positions.
But the operation was slowed by landmines and sniper fire as fighters desperately battled to hold off the onslaught.
A U.N. Security Council report into the threat posed by ISIS warned the group still has up to 18,000 armed terrorists ready to fight to the death.
This story originally appeared in The Sun. For more from The Sun, click here.
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