Brunei, one of Southeast Asia's most prosperous nations, has found that wealth alone does not open every door — its passport slipped one place to 19th in the 2026 Henley Passport Index, now granting visa-free access to 163 destinations, three fewer than the year before. The quiet decline invites reflection on the gap between economic fortune and diplomatic reach, reminding us that a nation's freedom of movement is shaped as much by its relationships with the world as by its resources within it.