The Middle East in Focus this Week!!!... Has the strategy against ISIL failed?

A meeting in Paris is held to debate how best to cope with the radical group's successes.

From the start, the US-led coalition that is fighting ISIL acknowledged that the battle would be long. Now, foreign ministers from several countries have met in Paris to figure out why their strategy against ISIL is not working in the face of the radical group's territorial gains in Iraq and Syria.
 
Before the Paris meeting, the US and Iraq blamed each other for the failure. The US defense secretary said the Iraqi army lacks the will to fight ISIL, while the Iraqi prime minister said his country does not get enough international support.
 
So, what will it take to defeat ISIL?