The Iranians haven't won a war since the Islamic Republic was formed. Militarily they suck! What they've always been great at is stalling. They've found that if they can just drag out negotiations for years and disrupt the world's oil supply while they're doing it that the rest of the world eventually loses interest. They start selling oil on the black market. They start up their nuclear program again. They start building missiles. They resume funding proxies and terror. They've been doing that for DECADES!
Trump isn't Obama. He figured out what Iran's Achilles' heel is. They use the threat of shutting down the Straight of Hormuz to scare the rest of the industrial world. But Trump realized that if you kept Iran from being able to sell their oil that everything starts to fall apart for the IRGC. Trump saw that a blockade would bring the Iranian regime down without having to put boots on the ground. The Iranian regime can't provide food, water, gasoline or electricity for it's people. Their currency is now worthless. The population is growing ever more restive. Protests are starting again. Now THEY are the ones with a ticking clock! They may not care about their people but they know that the people are reaching the breaking point. All of these things ARE comforting to me!