A stunning essay by Lt. Col. Daniel Davis, in Armed Forces Journal. Davis has served four tours of duty in Iraq and Afghanistan. Excerpts:

I spent last year in Afghanistan, visiting and talking with U.S. troops and their Afghan partners. My duties with the Army’s Rapid Equipping Force took me into every significant area where our soldiers engage the enemy. Over the course of 12 months, I covered more than 9,000 miles and talked, traveled and patrolled with troops in Kandahar, Kunar, Ghazni, Khost, Paktika, Kunduz, Balkh, Nangarhar and other provinces.

What I saw bore no resemblance to rosy official statements by U.S. military leaders about conditions on the ground.

Entering this deployment, I was sincerely hoping to learn that the claims were true: that conditions in Afghanistan were improving, that the local government and military were progressing toward self-sufficiency. I did not need to witness dramatic improvements to be reassured, but merely hoped to see evidence of positive trends, to see companies or battalions produce even minimal but sustainable progress.

 Instead, I witnessed the absence of success on virtually every level.

When it comes to deciding what matters are worth plunging our nation into war and which are not, our senior leaders owe it to the nation and to the uniformed members to be candid — graphically, if necessary — in telling them what’s at stake and how expensive potential success is likely to be. U.S. citizens and their elected representatives can decide if the risk to blood and treasure is worth it.