The letter the US president, Donald Trump, says he sent to Iran’s leadership offering to reopen talks on the country’s nuclear programme comes at a point when Iranian domestic politics is at its most unstable for years.
In the past month, the conservative-dominated parliament has asserted its power over the broadly reformist president elected last June by impeaching and sacking the experienced economy minister, Abdolnaser Hemmati, while Mohammad Javad Zarif, the vice-president and most prominent reformist, has also been forced out.
