The Palestinian Authority on Saturday took aim at lead American peace negotiator Jason Greenblatt, describing the White House envoy as an “arrogant colonist” and an “ally of [Israeli] settlements.” The denunciation followed the publication of an article by Greenblatt in the Palestinian daily Al-Quds, in which he contended that Palestinians “deserve more from their leadership than political statements and bargaining positions. While waiting for a possible political solution, it is high time to build the Palestinian economy and provide Palestinians with the opportunities they deserve,” he wrote. The PA has been boycotting U.S. officials since President Donald Trump in December recognized Jerusalem as Israel’s capital and thereafter relocated the American embassy to the holy city. While Ramallah has slammed other Trump administration officials—including referring to U.S. Ambassador to Israel David Friedman as a “son of a dog”—it has been more reserved when it comes to Greenblatt, who by most accounts is well-regarded by Sunni Arab countries and considered relatively even-handed and open to discussing all perspectives. The White House’s much-anticipated peace proposal reportedly has been completed, although there remains internal disagreement on when to present the plan primarily due to the PA’s adamant refusal to engage in any U.S.-led negotiating process and also because of political instability within Israeli Prime Minister Binyamin Netanyahu’s governing coalition.