Frank G. Wisner, a veteran American diplomat, Washington insider and foreign affairs specialist, died at the age of 86. He served as the U.S. ambassador to various countries and was involved in initiatives that brought about change in regions such as southern Africa and the Balkans. Wisner's career spanned the Cold War era, and he was known for his gregarious style and promotion of American interests. However, he clashed with the Obama administration during the Arab Spring when he expressed support for Egyptian President Hosni Mubarak, which was contrary to official policy.