There can never be a justification for this kind of violence it seems, except when "we" inflict it on others. Why do we never hear of the "heroes" who pull out burning children from under US and NATO bombs? Why do we never hear of the weeping husband cradling the smashed bodies of his wife and children after a drone attack? The problems of global terrorism and war, can only be solved by all of humanity working together. It appears that we still have a really long way to go.