Behind Gulf States' opposition to Iran's nuclear program is fear that after decades of international isolation and US animosity, Iran could be coming in from the cold.
Islamic State extremists in Iraq have created a common enemy in the region. But Iran has to tackle deep distrust – and keep nuclear talks on track – to forge a new relationship with its Arab neighbors.
Tal Afar, near Mosul, fell after heavy fighting between ISIS militants and Iraqi troops. ISIS has instituted brutal law in the areas of the north it now dominates.
Already, businesses in Iran are pre-positioning themselves for the opportunities that could line up after a possible lifting of sanctions if an agreement is met on its nuclear program.
Both President Obama and Secretary of State Kerry hit positive notes in their messages. But Iran's Supreme Leader Khamenei was critical of other elements.