During the mid-1960s, Israel began researching the possibility of developing and manufacturing a domestically designed tank. The need for such a vehicle became even more emphasized after failed negotiations with Great Britain around the same time led to Israel not being permitted to license produce the Chieftain MBT. Thus, during the late 1960s official development on a domestic Israeli tank began. The Israeli tank was primarily designed around combat experiences gained during the Yom Kippur War, resulting in heavy emphasis being put on crew survivability. By 1974, first prototypes of the new "Merkava" tank were constructed and put through initial testing. After nearly a decade of development, the Merkava Mk.1 was adopted for service by the IDF in December 1979 and modernized versions continue to serve with Israeli forces today.
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