Wikipedia tells us that “Between 1964 and 1973, the US dropped two million tons of bombs on Laos, nearly equal to the 2.1 million tons of bombs the US dropped on Europe and Asia during all of World War II, making Laos the most heavily bombed country in history relative to the size of its population… …Some 80 million bombs failed to explode and remain scattered throughout the country, rendering vast swaths of land impossible to cultivate. Currently unexploded ordnance (UXO), including cluster munitions and mines, kill or maim approximately 50 Laotians every year.”