To explain the difference in the number of killings and massacres, Morris speculates that "was probably due to the circumstance that the victorious Israelis captured some four hundred Arab villages and towns during April–November 1948, whereas the Palestinian Arabs and the Arab Liberation Army failed to take any settlements and the Arab armies that invaded in mid-May overran fewer than a dozen Jewish settlements". He considers too that belligerents behaved reasonably well and that the "1948 [war is noteworthy for the relatively small number of civilian casualties both in the battles themselves and in the atrocities that accompanied them" in comparison, for example, "with the Yugoslav wars of the 1990s or the Sudanese civil wars of the past fifty years".