Daniel Hoffman: Biden thinks he's kicked Afghanistan's 'endless war' to the curb. He's so wrong

Without American troops and our embassy closed, Afghanistan now represents a greater, clear and present danger to Americans than ever before.

If there is one thing I learned from serving in overseas war zones, it is that effective counterterrorism operations rely first and foremost on collecting information from human sources. Collecting intelligence on terrorists is highly challenging, sometimes unverified, and even incorrect. Those who use the intelligence—especially our military—to conduct strikes must rely on expert analysts to evaluate the raw intelligence.  We have lost our closest ally in the region, the former government of Afghanistan, and its soldiers who bravely fought and died during the past two decades. They fought against the Taliban and helped augment our counterterrorism mission against al Qaeda and ISIS.