Joe Biden’s Afghanistan Debacle

Joe Biden has been wrong about most major foreign-policy questions all of his adult life, but — as a long-time senator and then vice president — didn’t have much power to do anything about it.

That’s no longer the case, and we are now seeing the gut-wrenching consequences in Afghanistan, where Biden rejected the advice of his military and intelligence officials and ignored the clear evidence on the ground, and ordered a calamitous U.S. withdrawal.

Despite the president’s fantastical assurances a little over a month ago that Afghan security forces had the...