US pushing Iran to agree 20-year moratorium on nuclear activity
Washington’s demand that Tehran halt uranium enrichment has been a barrier to progress on talks
Related reading
US and Iran fail to reach deal after marathon talks
Vance said talks foundered over Tehran’s unwillingness to concede ground on nuclear weapons
Iran nuclear stand-off hardens after two decades of failed deals
Direct talks this weekend trod a familiar path of tortuous and frustrating diplomacy between Washington and Tehran
Key areas of contention between Iran and the US
Washington has raised concerns about Tehran’s nuclear programme, ballistic missiles and allied militant groups
Get used to the long Iran war
Tehran has a strong incentive to keep the conflict going
Can Trump finally make a nuclear deal with Iran?
After going to war twice, the US president is again trying to strike a deal on the regime’s uranium enrichment programme
How to end the US-Iran nuclear impasse
Without a deal on enrichment, Washington and Tehran could lose control of an escalating crisis