In his way, the late Lindsey Graham, who unexpectedly died Saturday evening, was the consummate politician of our time. The Republican senator from South Carolina was the epitome, the poster child, the quintessence of our era. Graham’s background and biography made him, during the first part of his career, a fervent American patriot, with a special devotion to the cause of American leadership in the democratic world. Born and raised in a small town in South Carolina, he got himself and his…