A diplomatic push by Oman, Pakistan and Qatar is widely expected to yield another pause in the Iran conflict, but there remains little prospect of a stop to what analysts fear has already become a “forever war”. On Monday, Iran and Oman agreed in principle to a temporary maritime route for ships travelling through the Strait of Hormuz. This could lead to the easing of the tit-for-tat blockades imposed by Iran and the US if President Donald Trump’s administration accepts it. Regional mediators...