As a young Congressional aide, I once visited the demilitarized zone between North and South Korea.

As we gazed out at the North Korean landscape, our American guide told us, “My father served in the Korean War and his whole life he wondered whether it was worth it.” At the end of his life, the man had gone back to South Korea and saw a free, prosperous nation. When he got on the plane to go home, he looked back at the South Korean countryside and broke down and cried. It had been worth it — the truth was evident.