Anwar Sadat favorable among Egyptians, it was rejected by the country's Muslim Brotherhood and the left, which felt Sadat had abandoned efforts to ensure a Palestinian state. With the exception of Sudan, the Arab world and the Palestine Liberation Organization (PLO) strongly opposed Sadat's efforts to make a separate peace with Israel without prior consultations with the Arab states. His refusal to reconcile with them over the Palestinian issue resulted in Egypt being suspended from the Arab League from 1979 to 1989. The peace treaty was also one of the primary factors that led to his assassination; on 6 October 1981, militants
Anwar Sadat were turned from bitter enemies into fast friends. The relationship between Cairo and Tehran became so friendly that the Shah of Iran, Mohammad Reza Pahlavi, called Sadat his "dear brother". After the 1973 war with Israel, Iran assumed a leading role in cleaning up and reactivating the blocked Suez Canal with heavy investment. The country also facilitated the withdrawal of Israel from the occupied Sinai Peninsula by promising to substitute the loss of the oil to the Israelis with free Iranian oil if they withdrew from the Egyptian oil wells in western Sinai. All these added more to the personal