The Piggy War

In 1859, the Pig War brought the United States and Great Britain to the brink of war on Washington's San Juan Islands after an American farmer shot a British-owned pig that had wandered into his potato patch. What began as a simple dispute quickly escalated into an international standoff, with hundreds of American soldiers and British warships facing each other across the island, yet remarkably, not a single human life was lost. The conflict ended through diplomacy and years of peaceful joint occupation before an international arbitration awarded the San Juan Islands to the United States in 1872. Join us as we uncover the surprisingly tense, often humorous story of how one unfortunate pig nearly changed the map of the Pacific Northwest forever.

References 
The Pig War - San Juan Island National Historical Park (U.S. National Park Service) 
​​​​What it’s like to live in Point Roberts, a US town completely surrounded by Canada | CNN