The unacceptability of the use of weapons that fail to discriminate between military and civilian personnel is firmly established as a fundamental principle of international humanitarian law. These principles which prohibit indiscriminate killing and make the fundamental distinction between combatants and non-combatants have also found expression in the body of treaty law which have been incorporated in a series of international conventions, from about the time of the 1899 Hague Peace Conference and culminating with the Geneva Conventions of 1949 and [their] Additional Protocols of 1977.