Israel and
Hamas may currently be locked in deadly combat, but, according to several current and former U.S. intelligence officials, beginning in the late 1970s, Tel Aviv gave direct and indirect financial aid to Hamas over a period of years.
Israel "aided Hamas directly -- the Israelis wanted to use it as a counterbalance to the PLO," said Tony Cordesman, Middle East analyst for the Center for Strategic Studies.
Israel's support for Hamas "was a direct attempt to divide and dilute support for a strong, secular PLO by using a competing religious alternative," said a former senior CIA official. According to documents United Press International obtained from the Israel-based Institute for Counter Terrorism, Hamas evolved from cells of the Muslim Brotherhood, founded in Egypt in 1928. Islamic movements in Israel and Palestine were "weak and dormant" until after the 1967 Six Day War in which Israel scored a stunning victory over its Arab enemies.
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What took Israeli leaders by surprise was the way the Islamic movements began to surge after the Iranian revolution, after armed resistance to Israel sprang up in southern Lebanon vis-à-vis the Hezbollah, backed by Iran, these sources said. "Nothing provides the energy for imitation as much as success," commented one administration expert.
A further factor of Hamas' growth was the fact the PLO moved its base of operations to Beirut in the '80s, leaving the Islamic organization to grow in influence in the Occupied Territories "as the court of last resort," he said. When the intifada began, Israeli leadership was surprised when Islamic groups began to surge in membership and strength. Hamas immediately grew in numbers and violence. The group had always embraced the doctrine of armed struggle, but the doctrine had not been practiced and Islamic groups had not been subjected to suppression the way groups like Fatah had been, according to U.S. government officials. But with the triumph of the Khomeini revolution in Iran, with the birth of Iranian-backed Hezbollah terrorism in Lebanon, Hamas began to gain in strength in Gaza and then in the West Bank, relying on terror to resist the Israeli occupation.