Israeli–Palestinian conflict Estimates of civilian casualties from the Israeli–Palestinian conflict differ. A 2007 report by the United Nations Office for the Coordination of Humanitarian Affairs (OCHA) found that, from the beginning of the second intifada in September 2000 until the end of July 2007, at least 5,848 people were killed in the conflict, over half of whom were civilians. Amongst those killed in that period, 69% of Israelis were civilians, while the report estimated 59% of Palestinian casualties were civilians. In May 2012 B'Tselem decided to stop addressing the question of participation in combat, with respect to Palestinians killed in the West Bank, stating that, "while in the past there were complicated incidents in the West Bank that might have met the definition of "combat incidents," in recent years the incidents meeting that definition have been almost nil." B'Tselem does not address or count the number of Israelis killed or maimed by Palestinians or Palestinian forces. B'Tselem has also established a separate category for recording Palestinian police officers killed by Israel; according to B'Tselem, Israel counts the Gaza police force as a non-civilian when calculating the civilian casualty ratio, and states that such a definition is not compatible with the ICRC interpretation of international law. The International Committee of the Red Cross regards persons as civilians if they do not fulfill a "continuous combat function" (for example, many police officers) and do not participate directly in hostilities. Analysts state that in addition to their civilian roles such as policing traffic, police in Gaza are active in counter-intelligence and fighting dissent. Israeli airstrikes on the Gaza Strip The head of the Shin Bet reported to the Israeli Cabinet that of the 810 Palestinians killed in Gaza in 2006 and 2007, 200 were civilians (a ratio of approximately 1:3). Haaretz assessed this to be an underestimation of civilian casualties. Using figures from Israeli human rights organisation B'Tselem, they calculated that 816 Palestinians had been killed in Gaza during the two-year period, 360 of whom were civilians. Military journalist Amos Harel wrote in Haaretz that the ratio between military targets and civilians was 1:1 in 2002–2003, when half the casualties in air assaults on the Gaza Strip were civilians. He attributed this to an Israeli Air Force (IAF) practice of attacking militants even when they had deliberately located themselves in densely populated areas. The ratio improved to 1:28 ratio in late 2005, meaning