Ed writes "Thanks to what amounts to a reversal of 20 years of American policy on settlements in Jerusalem, Obama has given the Palestinians a reason to refuse to come to the table that Israel simply can’t address." 20 years, Ed? I'm pretty sure Ed counts himself as more of a conservative than a liberal, but did he really not know that in 2003 the Bush administration cut 100s of million in loan guarantees because of Israeli settlement activity.
From PDF page 18 of this 2009 Congressional Research Service report (pdf)
On November 26, 2003, the Department of State
announced that the $3 billion loan guarantees for FY2003 were reduced by $289.5 million because Israel continued to build settlements in the occupied territories and continued construction of the security barrier separating Israelis and Palestinians. In FY2005, the U.S. government further reduced the amount available for Israel to borrow by an additional $795.8 million. Since then, no other deductions have been made.