It is hard to imagine how this would coax the Palestinians to offer more concessions in a negotiation with Israel. What they see is that the United States under Mr. Trump has embraced the views of Israeli right-wing nationalists and tried to take two of their most important negotiating issues — the status of Jerusalem, which Mr. Trump undermined by announcing late last year that the United States embassy would be moved to Jerusalem, and now the right of return — off the table.
Through all the decades of peace negotiations, the Palestinians had believed that the United States, dedicated to Israel’s security, was the only power that could fairly mediate with Israel on their behalf. Mr. Trump has abdicated this leadership role, risking a humanitarian disaster and renewed violence.