Days of violence in Jerusalem and an exchange of fire in Gaza overnight have raised the possibility that Israel and Gaza's Hamas rulers will once again go to war, as they did less than a year ago under similar circumstances.
This time around, both Israel and Hamas have strong incentives to avoid all-out war. But neither wants to be seen as retreating from a Jerusalem holy site at the heart of the century-old Mideast conflict, so further violence cannot be ruled out.
