Why is there so much conflict in Iraq?

After weeks of fighting between government forces and the Islamic State of Iraq and the Levant (ISIL, also known as ISIS) in northern Iraq, U.S. forces and their allies are preparing to move to take Mosul, the capital of the country’s second largest province.

The U.K. military and the United States and its allies are in Iraq as part of the “Operation Inherent Resolve,” a U.N.-brokered plan to destroy the ISIL and root out its rule in Iraq.

In the past few weeks, Iraqi troops have been driven back from key villages and towns that have been overrun by the militants, including the northern city of Mosul, which was recaptured from ISIL in December.

U. S. and coalition air strikes have been effective at clearing the town, but have yet to clear the city from ISIL.

In some parts of the province, ISIL fighters have retreated, and the U. K. military has said it plans to try to capture some of the territory from the group.

But it has been unable to do so, partly because of a lack of air support from the U