How Does a Ballistic Missile Work—and Why Is It so Difficult to Intercept? INSS researcher, Dr. Yehoshua Kalisky, writes: The impact of the ballistic missiles launched from Yemen that hit a school in Ramat Efal and a park in Jaffa highlights the need for “out-of-the-box” thinking to improve Israel’s defense layers against such threats. An assessment of the damage from the strike in Ramat Efal indicates that this wasn’t collateral damage but likely a direct hit by the warhead or part of the missi