Since its establishment in 1948, Israel has consistently prioritized its survival. In light of this, the leaders of the country have developed security doctrines to confront geopolitical and strategic challenges. One such doctrine was Ben-Gurion's peripheral doctrine, which aimed to protect Israel from the Arab-imposed siege and isolation by forming alliances with non-Arab nations such as Iran, Turkey, and Ethiopia. However, the Islamic revolution in Iran and its subsequent change in attitude regarding Israel, along with Israel's peace treaties with Egypt and Jordan and the Oslo and Wadi Araba accords, allowed Israel to gradually break free from the Arab barrier and shift its focus to Iran as its new adversary. The disintegration of the Soviet Union, a significant player in the Cold War, further facilitated Israel's efforts to infiltrate Iran's borders, mainly through its relations with the Republic of Azerbaijan. The present study, with descriptive-analytical method, seeks to answer the question, what is Israel's strategy on the borders of the Islamic Republic of Iran, especially the Republic of Azerbaijan? In response to the research question, it is argued that Israel, under the peripheral doctrine, in order to be present in the border zone of Iran, especially the Republic of Azerbaijan under the peripheral doctrine, has adopted two strategies of separation, unity and coalition to contain Iran. The method of collecting information in this research is using written sources including books, articles, documents and internet data.