1.   An Israeli agent went undercover in the Netherlands to infiltrate the network.

2.   Ayyash was hunted down and killed in Gaza earlier this month, presumably by Israeli agents.

3.   Ayyash was killed last month by a booby-trapped cellular phone widely believed to have been the work of Israeli agents.

4.   But Arab tensions, and concern over the assassination of a radical Palestinian, almost certainly by Israeli agents, dominated hallway talk.

5.   But time and again, Ayyash eluded Israeli agents.

6.   By evening, he said, he felt the stone throwers themselves were infiltrated by Israeli agents and called off the skirmishes.

7.   Growing suspicions about Goldman are confirmed when three Israeli agents burst into his apartment and arrest him, accusing him of being Dorf himself.

8.   Hamas has accused Israeli agents of planting and setting off the booby-trapped cellular phone that killed Ayyash, and it has vowed to avenge his death.

9.   He led secret missions to Europe and the former Soviet Union to acquire bomb technology, carefully covering his tracks to avoid assassination by Israeli agents.

10.   He was freed last week in exchange for the release of two Israeli agents arrested in Jordan after a failed assassination attempt there against a Hamas leader.