The text message, received as the deadline for nuclear talks was expiring, gave Fatemeh Moghimi a thrill she had been waiting years to feel. “The deal,” it read, “was done.” It took Ms. Moghimi, the owner of a leading trucking company, a second to absorb the news. When she did, she recalled recently in her Tehran office, she fairly screamed to herself: “We’re in business!” As it turned out the message was a bad joke, and instead the nuclear negotiations were extended for another seven months — bad news for Iran ’s battered, inflation-ridden economy. But Ms. Moghimi was unfazed. “I’m not giving up hope,” she said with a smile. “It is going to be over soon. It is as if the sun is peeking through the clouds after a terrible rainstorm.” Ms. Moghimi’s unyielding optimism, shared by many top businesspeople here, was dented briefly last month […]