International mediators trying to promote Mideast peace say Israel's settlement expansion is eroding the viability of a Palestinian state and raises "legitimate questions" about its commitment to a two-state solution.

In a highly anticipated report released on Friday, the so-called Quartet of negotiators — the United Nations, the United States, European Union and Russia — calls on Israel to end its policy "of settlement construction and expansion, designating land for exclusive Israeli use, and denying Palestinian development."

The report criticizes the glorification of Palestinians who commit "terrorist attacks" and calls on Palestinians to "act decisively" to stop incitement to violence and to clearly condemn "all acts of terrorism."

It also calls for Gaza and the West Bank to be reunified "under a single, legitimate and democratic Palestinian authority."