In a region where certainty has long been purchased through American military guarantees, Donald Trump gathered Gulf Arab leaders this week as two interlocking conflicts — a war with Iran and an intensifying Houthi insurgency in Yemen — have begun to erode the foundational assumptions of Gulf security. The meeting is less a summit of confidence than a reckoning: decades of strategic dependence on Washington are being tested in real time, and the leaders who assembled carry with them questions that no single alliance can easily answer. What unfolds next may quietly redraw the security architect