Five years have now passed since the U.S. invasion of Iraq. Vice President Dick Cheney, in Iraq with Sen. John McCain — the presumptive Republican nominee for president — summarized the five years by saying, “If you reflect back on those five years, it’s been a difficult, challenging, but nonetheless successful endeavor. We’ve come a long way in five years, and it’s been well worth the effort.” Democratic presidential aspirant Sen. Hillary Clinton called the war a failure.

It is the role of political leaders to make such declarations, not ours. Nevertheless, after five years, it is a moment to reflect less on where we are and more on where we are going.