When the world's largest asset manager quietly flies its CEO to Istanbul for a face-to-face with a sitting president, seasoned investors pay attention. That is exactly what happened on March 27, 2026, when Larry Fink — the head of BlackRock, which oversees roughly $14 trillion in assets — landed in Istanbul for a private meeting with President Recep Tayyip Erdoğan at the Dolmabahçe Presidential...