Israeli soldiers are seen during an army operation in the West Bank city of Nablus, Saturday, Dec. 26, 2009. Palestinian officials say Israeli troops have killed three activists of the Fatah movement of Palestinian President Mahmoud Abbas. Saturday's operation in Nablus' old city came two days after Palestinian gunmen killed an Israeli in a West Bank ambush. (AP Photo/Nasser Ishtayeh)AP – Israeli troops blasted their way into the homes of three wanted Palestinians on Saturday, killing each in a hail of bullets and straining an uneasy security arrangement with Palestinian President Mahmoud Abbas.