The Obama tape nobody can seem to find

Seven days after the Benghazi attack, Barack Obama went on David Letterman’s “Late Show.”

The date was September 18, 2012. Ambassador Christopher Stevens and three other Americans were dead. The Obama administration was under mounting pressure to explain what had happened. The election was less than two months away, and the administration’s account — that the attack had grown out of a spontaneous reaction to an anti-Islam video — was already under scrutiny.

We live in an age when everything is supposedly recorded forever. Yet political memory remains remarkably fragile.

So Obama went on Letterman. Naturally.

That was one of the more striking moments in A.J. Rice’s recent “Dangerous Laughter” conversation with Drew Thomas Allen, author of “Clinton Hoax, Obama Coup: The Declassified Story of the Trump-Russia Delusion.”

Allen’s larger