I think there is one very important thing to mention about a possible all out war in the middle east !

This generation has not seen real war ! None of us have witnessed what a real all out war, with modern weapons is really like !

What we have seen in Iraq and Afghanistan is the US trying the topple the regimes of those countries ! If the US wanted to level those countries completely, those wars would have been over in a week...and I'm not talking about using nukes, just conventional carpet bombing with a sky filled with B-52s, B-2s, etc !

Just imagine how an all out war will be like in the middle east, when nobody cares about civilian casualties anymore and all countries attack with everything they've got at their disposal !