 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. Authorities say the crew of a Greek Coast Guard patrol boat has exchanged gunfire with a man piloting a speedboat smuggling migrants from neighboring Turkey to a Greek island. No injuries have been reported.