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Jordan and Israel mark 15 years of peace today, but ties between both countries are cooler than ever.

Since the right-wing Israeli government of Benjamin Netenyahu took office in May, Jordan has been left further disappointed with its neighbour.

“Our relation is getting colder,” King Abdullah told Israel’s daily Haaretz newspaper this month. “Let’s remember that the peace treaty was signed as part of a process to achieve comprehensive peace. And the full potential of not just Jordanian-Israeli relations, but the whole region, will not be realised unless comprehensive peace is achieved.”

The king has for years expressed his frustration with Israel’s intransigence over the peace process, its ignoring the two-state...