The Gaza Strip has been badly affected by war and conflict over the past four decades. Palestinians are exposed to repeated incursions of the border areas, with many resulting casualties. At the end of December 2008, more than 230 Palestinians were killed and at least 770 were injured, including 100 in critical condition, after an Israeli airstrike. This was followed by a military operation that continued for 23 days, in which 1420 Palestinians, including 446 children, were killed. At least 4000 houses were totally destroyed and 16000 partially damaged (Palestinian Red Crescent, 2008).