With the improvement of ballistic missile system technology, the tool error affecting missile hitting accuracy has been reduced and disturbing gravitation has been a main factor.

随着弹道导弹系统技术的不断改进，影响导弹精度的工具类误差已逐渐降低，地球重力场扰动引力已经成为影响导弹命中精度的主要因素。

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"In terms of long-term strength and the whole threat that we see of the ballistic Shahab missiles and other types of missiles from Iran, this is a main factor why we developed it and deployed it, " he said.

BBC: Israel successfully tests Arrow 3 missile interceptor