ISIS or ISIL? Is there really a difference?

The term ISIS/ISIL is interesting, ISIS stands for Islamic State Iraq and Syria whilst ISIL stands for Islamic State Iraq Levant that really takes into account their wider regional ambitions of Israel, Palestine, Lebanon and Jordan.

The UN is using the term ISIL and could be possibly seen as not wanting to be in direct conflict with Syria causing military action to escalate. The French are refusing to use either term as they believe the term state gives them some type of legitimacy.

This is not a mob I would like to be in conflict with over there, the concern for many nations is returning fighters trained as terrorists seeking to inflict their way of life on our shores.