World Notes ISRAEL

When the clandestine leadership of the Palestinian uprising issued a call last week for increased attacks on Jews "using all the means of struggle available," the response was swift. Palestinians stabbed four Israeli bus passengers, one fatally, in Tel Aviv, and three Israelis were wounded when shots were fired at a bus traveling through the West Bank.

That violence raised fears that the three-year-long uprising has entered a new and more deadly phase, in which stones are being supplanted by knives and guns.

Israeli security forces responded by doubling the number of roadblocks in Israel and the West Bank, searching Palestinian laborers with hand-held metal detectors and preventing many from entering Israel. In the wake of the stabbings, police in East Jerusalem are wearing knife-proof vests and patrolling Arab neighborhoods in teams. Defense Minister Moshe Arens hopes to appease an angry public by resuming the controversial deportation of suspected "ringleaders," and has asked government attorneys to streamline the necessary legal proceedings. Says Arens: "We will fight fire with fire."