Battle of Karameh
After Jordan lost control of the West Bank to Israel in 1967, Palestinian fighters known as fedayeen moved their bases to Jordan and stepped up their attacks on Israel and Israeli-occupied territories. One Israeli retaliation on a PLO camp based in Karameh, a Jordanian town along the border with the West Bank, developed into a full-scale battle. The perceived joint Jordanian-Palestinian victory against Israel during the 1968 Battle of Karameh led to an upsurge in Arab support for the fedayeen in Jordan, in both new recruits and financial aid. The PLO's strength in Jordan grew, and by the beginning of 1970, groups within the PLO had begun to openly call for the overthrow of the Hashemite monarchy.