I heard Mort Sahl tell this story about Al Haig on the CBS
morning TV program on March 24, 1987; this version is
paraphrased from my notes.

When Prime Minister Nakasone visited President Reagan, he
asked for the auto import restrictions to be rescinded,
saying Weve had a rougher time of it; consider
Hiroshima.

The Gipper was nonplused. What has that got to do
with it?

Well, weve never destroyed one of your cities,
replied Nakasone.

Quickly Haig cut in: What about Detroit?