The Jordanian minister of Water and Irrigation and Israeli water commissioner periodically attend JWC meetings and oversee the institution. For instance, the 1997 desalination dispute and the 1999 drought required emergency meetings between the state leaders of Jordan and Israel. See section on Water Resources Management above for detailed information on the plans. Jordan was the driving force behind the agreement and was motivated by its ambition to build a dam on the Yarmouk - a structure discussed in the various development plans that preceded the Johnston Plan.