“Pick between your two old ones,” Clinton said, laughing, in an interview on Tuesday.
Clinton described an environment at the university where students who are highly engaged on global issues only regularly protest Israel, despite not knowing the history.
Since the war, Clinton has not spoken against the prime minister publicly until this moment.
The meeting highlighted the families' desperate plea for international support.
Hillary Clinton agreed that Israel has the right to defend itself against Hamas, during a bipartisan panel discussion at the 30th anniversary celebration for Baker Institute.
"Defending democracy in Ukraine, expanding NATO - just as an aside, too bad Vladimir, you brought it on yourself," she said, prompting laughter and applause.
Readers of The Jerusalem Post have their say.
Hillary and Chelsea Clinton produced a documentary about a Holocaust survivor that will debut on PBS on Tuesday, timed to Yom Hashoah.
Trump sued Clinton claiming that she and other Democrats sought to rig that election by falsely accusing his campaign of links to Russia.
Clinton will officially join in February and will serve as a professor of practice at Columbia's School of International and Public Affairs (SIPA) and as a Columbia World Projects presidential fellow