The killing of the Islamic Jihad terrorist strains the fragile cease-fire because militant groups have said they will abide by the truce only if Israel stops tracking down fugitives. "We believe that the Israelis have committed to stop violence against Palestinians everywhere; these actions are only adding fuel to the fire," said Palestinian negotiator Saeb Erekat. "Israel should let the Palestinian security forces do their job in these areas." But that’s a risky business considering the Palestinian Authority’s consistent failure to lift a finger against terrorist groups and their infrastructure. Israel says that the despite the cease-fire, it will continue to go after “ticking bombs”--terrorists planning imminent attacks.