“Make America Great Again,” Donald Trump’s campaign motto, implies that America is no longer great. Trump, not always one for nuance, often says it directly: “The American Dream is dead.”

Across the country, Trump voters, and millions of others, share this view. America is no longer great militarily, they say. Our armed forces have fallen behind, we’re letting the Islamic State run rampant over the Muslim world and “political correctness” has made it impossible for us to kill the bad guys.