Open this photo in gallery: Former President Barack Obama speaks to attendees at the Obama Foundation Democracy Forum on Nov. 03, in Chicago, Illinois.Scott Olson/Getty Images Poor Joe Biden just can’t catch a break. It is bad enough that the U.S. President has to deal with foreign friends and enemies alike whose public positions on the Israel-Hamas conflict are intended for their own domestic political audiences, and which even run contrary to what they say and believe in private. Just when Mr. Biden needs all the backup he can get, as he navigates perhaps the trickiest geopolitical challenge of his...