Israel, Jordan and the Palestinian Authority have signed a water sharing pact aimed at one day replenishing the rapidly drying Dead Sea.

The agreement will build a pipeline to carry brine from a desalination plant at the Red Sea to the Dead Sea, while providing drinking water to the region.

The Dead Sea is dropping by as much as 1m (3.3ft) a year as the River Jordan is depleted for use in irrigation.

But critics fear the plan's impact on the Dead Sea's fragile ecosystem.

Such a project has been under discussion for years.