As President Donald Trump lurches repeatedly from threats of devastation to promises of peace, it's becoming increasingly clear that U.S. military might is no longer capable of subduing even a mid-sized power like Iran, much less holding the rest of the world in its thrall.

Amid all the drama of air raids, drone strikes, and naval blockades, there are deeper geopolitical forces at play that lend a lasting historical import to events in the Persian Gulf — dynamics best seen by comparing two newspaper editorials with revealing similarities despite the 80 years separating their publication.

Writing in 1942, during some of Britain's darkest days in World War II, the editors of the venerable London Times looked far beyond the relentless German attacks on their forces in Egypt or the Nazi U-Boat sinkings of Royal Navy ships in the Atlantic to predict their empire's future with an uncommon prescience. With its contradictory motto of "Imperium et Libertas" (Empire and Liberty), the vast British Empire, which still covered a quarter of the globe, had already become what those editors called "a self-liquidating concern." Once the "temporary circumstances" that had allowed Britain's ascent — naval dominance, industrial preeminence, and "the relative weakness of rival states" — faded, that empire's "ultimate reliance on coercion" could no longer hold. Ready for self-governance, Britain's many colonies, the editors suggested, would soon begin breaking away and so eclipse the empire. And that prediction couldn't have been more accurate. Within five years of that editorial's publication, the British Empire had already started to break apart.