Iran and the United States prepared for a fifth round of negotiations over Tehran’s rapidly advancing nuclear program Friday in Rome, with enrichment emerging as the key issue.

US president Donald Trump reignites trade war with threat to impose high tariffs on European goods, and Apple iPhones made overseas ...

US officials have indicated that, in the absence of an agreement, they may consider other measures—including military options—to prevent Iran from acquiring a nuclear weapon.

Iran said it’s “time to decide” ahead of Friday’s nuclear talks with the U.S., with the main sticking point being whether ...