A 500-year-old edition of Moses ben Maimon (also known as Maimonides or by his Hebrew acronym Rambam)’s “Guide for the Perplexed” is going to be auctioned at a starting price of $1 million on Tuesday.

Have the US and Israel achieved their objectives? These are not trivial questions. But the deeper issue is this: In today’s information environment, they may no longer have clean, binary answers. In ...