Public International Law is a system of law
(weapons are expensive).
MOVIE:
WW I poisonous gas. Rights of prisoners not guaranteed
Fulfilling of IHL is a legal and practical recuirement. In Pakistan, they didn't and a lot of civilians
were left without homes etc. americans in Vietnam also make similar mistakes (beat a prisoner,
treat civilians harshly). Incident were there was a suspicion that there is a headquarter in a village,
there wasn't and the americans still killed most of the people and destroyed the village
War criminalrs punished by the state itself, international organizations only if the state doesn't
want to.
Legal order is not a defence. Always good to ask for a written order, although it's not a defence.
Afghanistan example: between two mountains a village and some gun fighters there. So the
Russians used the hammer technique they ambushed them from both side, but one group wasn't
able to push further as the gun fighters were strong in defence. The colonel said to open fire, but
annaabi.ee 
