Sky News US contributor Michael Ware says Islamic State is flourishing due to no American presence in the region.
“We saw over recent years when the west were still there, we were able to significantly disrupt and deteriorate Islamic State,” Mr Ware told Sky News Australia.
“They never disappeared but they were definitely brought low.
“Now we are seeing defections from Taliban groups or fighters drifting over to Islamic State.
“They are flourishing and they are drawing new recruits.”