Israel’s campaign, militarily and rhetorically, has quickly evolved beyond its initial targets. Over the weekend, it hit Iran’s energy facilities, including a gas depot and an oil refinery, triggering huge fires and spewing smoke across the sprawling capital of about ten million people.

Israel and Iran kept up their attacks, killing and wounding civilians and raising concern among world leaders meeting in Canada this week that the biggest battle between the two old enemies could lead to a broader regional conflict.