Jeffrey Feltman’s visit to Tehran this week was his second. The American diplomat, who is the UN under secretary general, also visited last September with UN Secretary General Ban Ki-moon. Feltman then had the unique experience of being an American welcomed to an audience with Supreme Leader Ali Khamenehi. This picture from last September shows, from left, First Vice Presdient Mohammad-Reza Rahimi, Feltman, Ban and Khamenehi.