The road to war · From the books
Black September in Jordan: the PLO leadership and thousands of fighters move to Lebanon.
Lebanon became the Palestinian resistance's chief base after King Hussein's army defeated the PLO in Jordan; thousands of fighters and tens of thousands of civilians came with its leaders, who settled in Beirut. Within months, Hanf judges, the Palestinians held the upper hand.
Sources differ: Figures differ: Hanf gives estimates of 200,000 to 500,000 Palestinians in Lebanon after 1970 and calls them unreliable; Picard cites the PLO Research Center (over 240,000 in 1970, plus over 100,000 from Jordan in two years). Quéméner alone gives a day (12 September) for the start of the Jordanian offensive.