The message is unmistakable: allies must contribute to the US-Israeli campaign against Iran or face consequences for the partnership itself. Yet, as the conflict enters its fourth week, Trump appears increasingly comfortable with a go-it-alone strategy.

Recently, Canada’s PM Mark Carney declared the end of the rules-based order. It was an outstanding speech. Yet, US unilateralism first soared in the 1980s. The rest of the West complied as long as it was beneficial. Today, it no longer is