India, July 19 -- We've reached a point where questions about the Gulf War seem more significant than the answers we have. It's even arguable that neither side knows what they might be. They're reacting to each other. So, let's see what those issues tell us.

Is the war about to restart? Donald Trump has tweeted that "in no uncertain terms" the ceasefire is over. He's reimposed the US blockade of the Strait of Hormuz and revoked sanction waivers on Iranian oil. Iran has been subjected to daily strikes. Next week, Trump threatens to attack its power plants and bridges. Energy installations, he says, will follow thereafter.

For its part, Iran has taken to attacking ships attempting to cross the Strait on what it considers unauthorised rout...