Rules of War (are they relevant)

This topic was discussed in another topic but the whole discussion disappeared when the server crashed. So I start a new. We discuss whether torture, rape etc. (all the fun bits of medieval war
) are acceptable in modern war. Please, maintain the high academic and intellectual level of the discussion. Dont just it is bad because your mom would be cross...
Let us observe first that there are no god given rules of war. As far as I know, Christ or Buddhas were not interested in the military aspect of humanity. As a result, the bible or Buddhist suttras dont contain any relevant information. The prophet was much more into it, hence, the qur'an is more useful but still the scholars cannot completely on what the interpretation of relevant verses should be. I dont know much about induism and sikhsim but I imagine they would not be very useful either.
With the absence of divine revelation, the rules of war are essentially a social contract. The rules of modern war such as Geneva convention, etc. have roots from the 18-th century Europe. Artillery made cities vulnerable and castles obsolete, and small armies could not protect them. The resulting rules of war were completely rational, protecting cities and infrastructure. They were more or less followed by European powers, with an exception of air raids in WW-2 and a few rogue states throughout the history.
However, are these rules applicable in the modern war, in particular, the war of terror
There is definitely no rational to sticking to it as the enemy is not. And this is well understood by pentagon strategists as well!! This is why we see Guantanamo Bay and Abu Grail. It is pity that elected politicians dont have a courage to admit it openly 


Let us observe first that there are no god given rules of war. As far as I know, Christ or Buddhas were not interested in the military aspect of humanity. As a result, the bible or Buddhist suttras dont contain any relevant information. The prophet was much more into it, hence, the qur'an is more useful but still the scholars cannot completely on what the interpretation of relevant verses should be. I dont know much about induism and sikhsim but I imagine they would not be very useful either.
With the absence of divine revelation, the rules of war are essentially a social contract. The rules of modern war such as Geneva convention, etc. have roots from the 18-th century Europe. Artillery made cities vulnerable and castles obsolete, and small armies could not protect them. The resulting rules of war were completely rational, protecting cities and infrastructure. They were more or less followed by European powers, with an exception of air raids in WW-2 and a few rogue states throughout the history.
However, are these rules applicable in the modern war, in particular, the war of terror


