The answer is simple. Kerry doesn’t want to blame the Palestinians for walking out because to do so would be a tacit admission that his critics were right when they suggested last year that he was embarking on a fool’s errand. The division between the Fatah-run West Bank and Hamas-ruled Gaza has created a dynamic which makes it almost impossible for Abbas to negotiate a deal that would recognize the legitimacy of a Jewish state no matter where its borders were drawn even if he wanted to.
Since Kerry hopes to entice the Palestinians back to the talks at some point, blaming Israel also gives him leverage to demand more concessions from the Jewish state to bribe Abbas to negotiate. Being honest about the Palestinian stance would not only undermine the basis for the talks but also make it harder to justify the administration’s continued insistence on pressuring the Israelis rather than seek to force Abbas to alter his intransigent positions.
Seen in that light, Kerry probably thinks no harm can come from blaming the Israelis who have always been the convenient whipping boys of the peace process no matter what the circumstances. But he’s wrong about that too. Just as the Clinton administration did inestimable damage to the credibility of the peace process and set the stage for another round of violence by whitewashing Yasir Arafat’s support for terrorism and incitement to hatred in the 1990s, so, too, do Kerry’s efforts to portray Abbas as the victim rather than the author of this fiasco undermine his efforts for peace.