Air strikes across Iran killed at least 15 people on Tuesday, while Iran fired on Israel and Saudi Arabia, prompting the temporary closure of a major bridge.The attacks came as Iranian officials urged youths to form human chains around power plants to protect them, as the latest deadline set by US President Donald Trump for Iran to reopen the Strait of Hormuz drew closer.Trump has threatened to bomb all of Iran’s power plants and bridges if Iran does not meet his Tuesday 8pm EDT deadline (8am...