 who has aligned himself with those seeking a return to the 2015 nuclear deal with world powers. After record low turnout in the first round of voting on June 28, it remains unclear how many Iranians will take part in Friday's poll. While 85-year-old Supreme Leader Ayatollah Ali Khamenei has final say on all matters of state, presidents can bend Iran toward confrontation or negotiations with the West. I'm Charles de la Desma.