Probably no president was ever called "uncle" by his eminent counterparts and by the people on the street. Yet in every Middle East country where Kurds live, "mam" ("paternal uncle" in Kurdish) was the honorific title of Jalal Talabani, a legend of Kurdish politics and former president of Iraq from 2005 to 2014.
When they use honorific titles, Kurdish men are usually addressed as "kak," which translates to "sir." For example, his followers and Kurds in general often address Massoud Barzani, the president of the Kurdistan Regional Government (KRG) of Iraq, as "Kak Massoud." Such a title of respect never suited Jalal Talabani. "Mam," however, was a sign of affection. I do not recall any time that I have addressed him in any other way in the more than 40 years we knew each other.