AT LEAST Binyamin Netanyahu wore a suit. The Israeli prime minister had a few goals when he met Donald Trump at the White House on April 7th. He needed relief from a newly-imposed 17% tariff on Israeli goods. He hoped to convince Mr Trump that Recep Tayyip Erdogan, the Turkish president, was meddling dangerously in Syria. And he wanted to explain that the time was right to strike Iran’s nuclear facilities: diplomacy would be futile.