Bernie Sanders wants Americans to believe he’s a garden variety “democratic socialist,” with the emphasis on democratic. But as media scrutiny of the Democratic presidential front-runner increases, we’re learning more about where his political sympathies lie, and they’re revealing about what a Sanders foreign policy would look like.

The latest example came this week when Mr. Sanders rejected an invitation to speak at the annual American Israel Public Affairs Committee summit in Washington next week. The conference is a campaign staple for candidates of both parties, though there is no obligation to attend.

But Mr. Sanders didn’t merely reply with a polite “sorry I’m busy.” The Senator took to Twitter on Sunday to say that “I remain concerned about the platform AIPAC provides for leaders who express bigotry and oppose basic Palestinian rights. For that reason I will not attend their conference.”

Bigotry? America’s pro-Israel lobby that includes more than 100,000 members nurtures racial hatred?

Apparently Mr. Sanders meant what he said because in the Charleston debate Tuesday night he was asked about the tweet and whether he would move the U.S. Embassy back to Tel Aviv from Jerusalem. President Trump moved the Embassy to Jerusalem in 2018 after many years of bipartisan Congressional support for doing so that included Joe Biden.