Burgenstock: Iran warned the United States on Sunday to "be careful" after President Donald Trump threatened to strike the Islamic republic over its support for Hezbollah, even as the arch-foes held talks in Switzerland seeking a deal to permanently end the Middle East war.
The negotiations to end a war that sowed chaos across the Middle East and rattled the global economy are meant to trigger a 60-day period to settle broader issues that have dogged US-Iranian relations for decades.