Israelis are celebrating the Kurds’ bid for independence

With a two-sentence statement supporting the Iraqi Kurds’ plan to hold a referendum on independence this Monday, Prime Minister Benjamin Netanyahu put Israel at odds with nearly every other major player in the Middle East.

Mr. Netanyahu, who endorsed not only the referendum but the establishment of a Kurdish state, had ample strategic reason: A breakaway Kurdistan could prove valuable to Israel against Iran, which has oppressed its own Kurdish population.

But given the interwoven history and shared emotion underlying his statement, present-day geopolitics can seem almost beside the point.

The Kurds and the Jews, it turns out, go way back.

Back past the Babylonian Captivity, in fact: The first Jews in Kurdistan, tradition holds, were among the last tribes of Israel, taken from their land in the Eighth Century B.C. They liked it there so much that when Cyrus the Great of Persia conquered the Babylonians and let the Jews go back home, many chose instead to stick around.