John Kerry has been US Secretary of State for precisely one year, and he has already 1) rescued President Obama from his ill-considered promise to bomb Syria if it crossed the "red line" and used poison gas; 2) opened serious negotiations with Iran on its alleged attempt to build nuclear weapons; and 3) taken on the job of brokering an Israeli-Palestinian peace accord.
Getting Obama off the hook was useful, and may yet lead to the US ending its support for the insurgency in Syria, which at this point would probably be the least bad outcome. Opening negotiations with Iran was long overdue, and makes the nightmare prospect of an American or a joint US-Israeli air attack on Iran daily less likely.
Kerry is indefatigable. He has been to Israel/Palestine eleven times in the past year, and spent as much as a hundred hours face to face with Israeli Prime Minister Binyamin Netanyahu, Palestinian leader Mahmoud Abbas or their close advisers. Unlike all the previous "brokers", he has been astoundingly discreet: not a hint of what has been said in private has leaked into the public domain. And yet there is almost no hope of a real peace deal.
If persistence in the face of all the odds were enough, Kerry would be the man who finally made it happen. (Israeli Defence Minister Moshe Yaalon recently complained that his approach is "obsessive and messianic.") But Kerry has no leverage: he has to rely on the desire of the two leaders to make the "peace process" work, and it just isn't there; not, at least, on any terms that both would find acceptable.
The list of deal-breakers includes almost every topic under discussion: the borders of a Palestinian state, the future of the Jewish settlements in the occupied territories, whether Jerusalem can be the joint capital of Israel and Palestine, whether Israel can maintain a military presence in the Jordan Valley, the right of Palestinian refugees to return to their ancestral homes, and Israel's demand that the Palestinians recognise it as an explicitly Jewish state.