"In this study we extend our previous work to examine the dynamic relationship between violence committed by Palestinian factions and that committed by Israel during the Second Intifada. We find a statistically significant relationship between Israeli fatalities claimed by groups associated with the ruling political party, Fatah, and subsequent Palestinian fatalities. We do not find a similar relationship for Israeli fatalities claimed by Hamas, Palestinian Islamic Jihad, and other Palestinian factions. We conjecture that these differences are due to the different positions of the factions vis--̉vis bargaining over a two-state solution to the conflict as well as the organizational structures of the factions"--Forschungsinstitut zur Zukunft der Arbeit web site.