As a young schoolteacher in the 1940s, Andrée Geulen noticed that several of her students were missing from class one day. She soon learned that they and their families had been rounded up by the Gestapo. Shortly thereafter, Joseph Berger recounts, Geulen joined the clandestine Committee for the Defense of Jews, determined to help other children escape.

The work was not just treacherous but also emotionally wrenching. Parents had to agree to turn over their children to the committee’s escorts without being told where the young were being taken or whether the parents might ever see them again. Some parents were arrested mere hours after Ms. Geulen had picked up their children.

She estimated that from the fall of 1942 to September 1944, when Belgium was liberated by Allied forces, she found havens or hiding places for 300 to 400 Jewish children, ranging from newborns to teenagers. For that, she was honored in 1989 by Yad Vashem, the Holocaust remembrance and research center in Jerusalem, as one of the Righteous among the Nations, a recognition given to non-Jews who risked their lives to save Jews from the Nazi genocide. She was made an honorary citizen of Israel.

When she died at one hundred on May 31 in a Brussels nursing home, Ms. Geulen had been the last survivor of a cadre of twelve women who, working for the committee, together rescued some 3,000 Jewish children.

Yasir Arafat was often quoted as saying that his “strongest weapon is the womb of an Arab woman.” That is, he believed the high birthrates of both Palestinians and Arab Israelis ensured that Jews would eventually be a minority in the Land of Israel, at which point Arabs could call for a binational state and get an Arab one. Using similar logic, both Israelis and their self-styled sympathizers have made the case for territorial concessions to prevent such an eventuality. Yet, Yoram Ettinger argues, the statistics have year after year told a different story:

Contrary to the projections of the demographic establishment at the end of the 19th century and during the 1940s, Israel’s Jewish fertility rate is higher than those of all Muslim countries other than Iraq and the sub-Saharan Muslim countries. Based on the latest data, the Jewish fertility rate of 3.13 births per woman is higher than the 2.85 Arab rate (since 2016) and the 3.01 Arab-Muslim fertility rate (since 2020).

The Westernization of Arab demography is a product of ongoing urbanization and modernization, with an increase in the number of women enrolling in higher education and increased use of contraceptives. Far from facing a “demographic time bomb” in Judea and Samaria, the Jewish state enjoys a robust demographic tailwind, aided by immigration.

However, the demographic and policy-making establishment persists in echoing official Palestinian figures without auditing them, ignoring a 100-percent artificial inflation of those population numbers. This inflation is accomplished via the inclusion of overseas residents, double-counting Jerusalem Arabs and Israeli Arabs married to Arabs living in Judea and Samaria, an inflated birth rate, and deflated death rate.

The U.S. should derive much satisfaction from Israel’s demographic viability and therefore, Israel’s enhanced posture of deterrence, which is America’s top force- and dollar-multiplier in the Middle East and beyond.