Since its establishment, Israel has constantly seen itself under threat and has prepared itself for any battle. In its military record, this regime has experienced six major wars with the Arabs, two wars with Iran, and numerous wars with paramilitary groups such as the PLO, Islamic Jihad, Hamas, Hezbollah, and Ansar Allah. The main question of the research is what changes have Israel's military strategies undergone before and after October 7th, 2023? The hypothesis tested in the research is that Israel has made its military strategy more aggressive and based on preemptive war. The library-documentary method was used to answer the research question. The research findings show that Israel, which used strategies such as preventive war, transferring the war to enemy territory, early warning, deterrence, short-term wars, and surprise attack in its wars; After the October 7, 2023 war (Operation Al-Aqsa Storm), it has changed its military strategy and has resorted to cyber deterrence, the Dahiya doctrine, preemptive warfare, and a more grassroots strategy. The essence of the new strategy is based on the gradual destruction of the militant groups opposing Israel (by assassinating their commanders and leaders and disintegrating their organizational structure and internal discipline) and the destruction of the urban, civil, and economic infrastructures where they live (to prevent their growth and proliferation and prevent their continued existence).