The G7 summit is under way in Canada, and the biggest agenda item by far is the war between Israel and Iran. Almost certainly, nothing said or done there will make the slightest difference. Since Russia's war on Ukraine showed up the brutal logic of nuclear-armed power, the entire world has shifted in ways that weren't first apparent. And that means that Israel will stop at nothing to prevent Iran from developing nuclear weapons - and this conflict likely will just be the first of its kind. Let's discuss.