Analysis: The $6 billion fault line; the first crack in the U.S.-Iran deal is already showing

The U.S. and Iran are disputing the terms of a $6 billion release of frozen Iranian oil revenues, with the U.S. conditioning access on purchasing approved humanitarian goods and Iran rejecting U.S. control over spending. The disagreement highlights diverging views on post-ceasefire control and could test the stability of the broader U.S.-Iran agreement.