Dominic Tierney, a professor at Swarthmore College and the author of multiple books about how America wages war, may know the reason why.
He believes the US can still successfully fight the wars of yesteryear — World War-style conflicts — but hasn’t yet mastered how to win wars against insurgents, which are smaller fights against groups within countries. The problem is the US continues to involve itself in those kinds of fights.
“We’re still stuck in this view that war is like the Super Bowl: We meet on the field, both sides have uniforms, we score points, someone wins, and when the game ends you go home,” he told me. “That’s not what war is like now.”