Trump will find it hard to outsmart Xi Zinping

Trump will want to come away from his trip to Beijing with a long list of successes. But if all he gets is a pledge by the Chinese leader Xi Zinping to buy more soya beans from American farmers - one of the things on his to-do list - then that will be a very small diplomatic achievement. Basically, what he wants is for Xi to say he will intervene with the Iranians to open the Strait of Hormuz, probably with the quid pro quo that the US lifts its blockade of Iranian ports. That would be good news indeed. In fact such an arrangement would make a lot of sense. The trouble is, Iran has geography on its side, and once the US warships have gone home, the Islamic Revolutionary Guard Corps will still be there and they can interfere with the Strait whenever they want. But if China backs the deal, then there might be a reasonable chance of it sticking, at least for the forseeable future. The Strait of Hormuz is the absolute key to this crisis. Trump hasn't got the combat manpower in the region to force open the strait, so a deal via Beijing will have to do. But Xi will want a lot in return, like a new arrangement for getting hold of US technology, a lifting of trade tariffs and, best of all, a softer line on Taiwan. Will Trump be prepared to offer such concessions in return for a guaranteed agreement over the strait? He will be tempted.