“Never interrupt your enemy when he is making a mistake.” Napoleon Bonaparte’s maxim may well have been in the minds of policymakers in Moscow and Beijing these past weeks, as the US war in Iran dragged on. And now that a 14-day ceasefire between Tehran and Washington is in effect, with both sides claiming “victory”, Russian and Chinese leaders still have an opportunity to profit from what many see as America’s latest folly in the Middle East.AdvertisementThroughout the weeklong conflict, China and Russia struck a delicate balance. Both declined to give Iran, seen to a varying degree as an ally…