From Haaretz :
"As in Thursday's attacks in Sinai, the attacks in Bali, Casablanca and Mombasa were characterized by a series of strikes indicating meticulous planning, collection of intelligence and impressive operational ability on the part of the attackers. Another common thread is that the targets were identified with Israel or Jews - the Tunisian synagogue, the Israeli-owned Paradise Hotel, the Arkia flight - as well as attacks on synagogues in Istanbul about a year ago. There were extremist Muslim organizations in Egypt that began to carry out such terror attacks even before September 11, 2001 in an effort to destabilize the Egyptian regime. In 1995, the Egyptian Islamic Jihad attacked a Cairo hotel and killed a number of Greek tourists. In 1997, terrorists from the Egyptian 'Jama'a Islamiya,' headed by Rifa'at Taa, slaughtered 69 Western tourists in southern Egypt. He was later counted among those signing a Osama bin Laden's manifest declaring the creation of Al-Qaida and a war against Christians and Jews."