When, on 12 August 1949, the Diplomatic Conference of Geneva finished its work, an important part of the law of armed conflict had been “codified and progressively developed” in the light of past experience both of the Second World War and other recent armed conflicts. However, this was a far cry from saying that one could lean back in satisfaction over a job well done; indeed, equally –or perhaps even more– important problems of the law of armed conflict had remained outside the scope of the Conference and, hence, had not found a solution in the four Conventions it had adopted. The Conference had, in fact, been restricted to an examination of the problems concerning protection of war victims rather than those concerning warfare proper; and, although the IVth or Civilians Convention in particular incidentally deals with the power of belligerents to attack enemy territory, the problem of the protection of the civil population against the dangers of modern warfare had remained essentially open.