Israel and US begin Arrow-4 development An artist's rendering of the Arrow-4 missile in development. (Courtesy of Israel Aerospace Industries) JERUSALEM — Israel and the United States have begun developing the Arrow-4 missile defense system that includes next-generation interceptors and will replace the Arrow-2 over the next decades, according to a statement from Israel’s Defense Ministry. “The Arrow weapon system, which was one of the first in the world to intercept ballistic missiles, will be upgraded with a significant capability, produced by Israel Aerospace Industries, in the form of the Arrow-4 interceptor. The interceptor will be the most advanced of its kind in the world and will provide a new layer of defense to the State of Israel and its citizens,” said Jacob Galifat, general manager IAI’s MLM Division.