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The point is whether you accept that we have to be brutal against the enemy in order to protect and maintain our way of life, ..../
I would agree with your sentiment cajar, but, why is it not easier, cheaper, more morally acceptable, less risky to defend our way of life in our own borders, rather than 'taking the fight to the enemy'?
Surely by taking the fight to the enemy, thus incurring the civilian casualties in the process and killing the enemy during their off-duty time, we have lost any moral ground to which we laid claim.
My (limited) understanding of it is that our involvement in foreign conflict is part of complex relationships including with america, and to do with our interests in oil supplies, which, despite being reduced to 'oil isnt worth blood' by anti war campaigners, has the potential to cripple our society and cause serious unrest. The fuel crisis gives a glimpse as to how behaviour of the public can create a tipping point, and the riots can show just how much of a knife edge we are on.