In 1971, real estate millionaire Michael Oliver envisioned a tax-free libertarian utopia free from government tyranny. The location? The Minerva Reefs, a pair of mostly submerged coral reefs in the South Pacific.
Oliver's Phoenix Foundation hired barges to pour thousands of tons of sand onto the reef, raising it above sea level. On January 19, 1972, they hoisted a newly minted flag, issued their own currency, and officially proclaimed the Republic of Minerva. However, the nearby Kingdom of Tonga was not amused.
Seeing an artificial nation popping up in its neighborhood as both a security threat and a slap in the face to regional sovereignty, King Tāufaʻāhau Tupou IV took action. In June 1972, the King led a Tongan expeditionary force—consisting of police, royal guards, and members of the royal brass band—sailing to the reefs aboard the royal yacht. Upon arrival, the Tongan forces executed a grand amphibious landing, tore down the Republic of Minerva's flag, and hoisted the Tongan flag while playing national music.
Tonga issued a formal proclamation asserting territorial sovereignty over the reefs, which was recognized by the South Pacific Forum shortly thereafter. Oliver and his fellow founders were forced to abandon their utopian dream, leaving the Republic of Minerva to eventually sink back into the ocean due to natural erosion. It remains one of the most bizarre geopolitical clashes in modern history, proving that even in international law, a royal brass band easily trumps a sand pile.