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.

Considering the current state of Israel-Arab relations, Ghaith al-Omari writes

First and foremost, no ceasefire will be possible without the release of Israeli hostages and commitments to disarm Hamas and remove it from power. The final say on these matters rests with Hamas commanders on the ground in Gaza, who have been largely impervious to foreign pressure so far. At minimum, however, the United States should insist that Qatari and Egyptian mediators push Hamas’s external leadership to accept these conditions publicly, which could increase pressure on the group’s Gaza leadership.

Washington should also demand a clear, public position from key Arab states regarding disarmament. The Palestinian Authority President Mahmoud Abbas endorsed this position in a June letter to Saudi Arabia and France, giving Arab states Palestinian cover for endorsing it themselves.

Some Arab states have already indicated a willingness to play a significant role, but they will have little incentive to commit resources and personnel to Gaza unless Israel (1) provides guarantees that it will not occupy the Strip indefinitely, and (2) removes its veto on a PA role in Gaza’s future, even if only symbolic at first. Arab officials are also seeking assurances that any role they play in Gaza will be in the context of a wider effort to reach a two-state solution.

On the other hand, Washington must remain mindful that current conditions between Israel and the Palestinians are not remotely conducive to . . . implementing a two-state solution.