Now that there is a fragile cease-fire in place, it’s time to ask what to do with Gaza’s intricate system of tunnels. There is, of course, nothing new about the use of tunnels in war. From ancient Jerusalem to Vietnam to Islamic State in Mosul, militaries have dealt with underground warfare for millennia. But the scale, purpose, and strategic role of Hamas’s tunnel network is fundamentally different from anything we’ve seen before. Gaza is approximately 140 square miles, and there are at least 600 miles of tunnels below its terrain. Before the war began, there were likely more tunnels in Gaza than there were roads. But it’s not just the density of Gaza’s tunnels that is unprecedented. For the first time in history, a military force built its entire strategy around its subterranean defenses, deliberately constructing tunnels beneath civilian infrastructure—schools, hospitals, homes—not to protect civilians, but to use them as human shields. This wasn’t merely a tactical decision; it was the primary means by which Hamas intended to achieve its political goals. John Spencer, a leading expert on urban warfare and military history and executive director of the Urban Warfare Institute, joins the Tikvah Podcast to discuss this unprecedented military challenge. He has visited Gaza six times since October 7, studying these tunnels firsthand and speaking with the Israeli commanders who’ve had to fight in them. Today, he walks us through how Israeli forces had to remap the battlefield and reimagine warfare, learning to fight simultaneously above and below ground. We’ll discuss the psychological demands of entering these tunnels, the innovative tactics that turned Hamas’s greatest defensive asset into an Israeli offensive advantage, and the immense challenge that remains: what do you do with hundreds of miles of tunnels now that active hostilities have paused?
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58:43
Tomer Persico on the Image of God: How Genesis gave rise to modern secularism
“God created man in His image: in the image of God He created him; male and female He created them.” Thus reads verse 27 of the first chapter of Genesis, one of the most important lines ever written in history. The Hebrew phrase rendered as “in God’s image” is b’tselem Elohim, and that is the title of a new book that traces the extraordinary career of this concept, known in Latin as imago Dei, throughout the course of Western civilization. Written by Tomer Persico, a research fellow at the Shalom Hartman Institute, the book is the biography of the idea that all human beings—not just kings or heroes—are created in the image and likeness of God. At the heart of the book is a deep irony: the religious idea of imago Dei contains within it the seeds of secularization; this religious innovation developed into a concept that would marginalize religion itself. The very emphasis on individual conscience and human equality that Judaism and Christianity cultivated eventually led to further questioning of law, and then authority, and then even the disciplines of religious life. That is, over the course of millennia, one of God’s pronouncements led some to question God’s providence and even God’s existence. Now, if you’re listening as an orthodox believer or theological traditionalist, you may be tempted to object: surely modern secularism represents a betrayal of the biblical depiction of the human condition, not an outgrowth of it, and there is much truth to that position. But Persico’s argument is directed primarily at the committed liberal democrat who believes deeply in individual rights, human dignity, and equality, but who may not realize where these convictions come from. To that person, Persico seems to be arguing: even you, especially you, are an inheritor of a biblical idea. Your deepest moral commitments didn’t spring from nowhere. They have a genealogy that begins in Genesis. On today’s podcast Mosaic’s editor Jonathan Silver sits down with Persico to discuss what all this implies.
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Yaakov Katz on Israel’s New Laser Defenses
On September 17, 2025, Israel announced that the world’s first laser defense system was ready for deployment, and was being integrated into its multitiered missile-defense shield. Iron Beam may be the most significant advance in missile defense since Israel pioneered the concept of intercepting missiles with missiles back in the 1980s. That’s because Iron Beam promises to solve one of modern warfare’s most vexing problems: the economic asymmetry of defense. When a crude, unguided rocket costing a few thousand dollars must be stopped with an interceptor costing between $50,000 and $100,000, the math quickly becomes unsustainable. The scale of rocket, drone, and missile fire into Israel over the last two years, coupled with the yet-unlaunched arsenals that Iran and her proxies have in reserve, would, if each one needed to be defended by traditional interceptors, cripple Israel’s economy. But Iron Beam changes that calculus entirely. Rather than the $40,000–$50,000 interceptor, each laser interception costs roughly two dollars—the price of the electricity that powers it. The system has what military officials call an “endless magazine,” capable of firing continuously as long as it has power. It’s already battle-tested, shooting down over 40 drones from Lebanon during recent conflicts. But this breakthrough also raises profound questions. Israel’s intelligence failures on October 7, 2025 partly stemmed from an overreliance on technological solutions—the belief that smart fences and surveillance systems could replace human judgment and offensive action. As Israel celebrates this remarkable achievement of military innovation, how do we ensure Iron Beam enhances rather than replaces sound strategic thinking? To discuss these questions, Mosaic’s editor Jonathan Silver is joined by Yaakov Katz, former editor of the Jerusalem Post and author of the new book While Israel Slept. Together, they explore what Iron Beam means for Israel’s defense, for military cooperation between Israel and America, and the future of warfare.
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Andrew Roberts and Meir Soloveichik on Winston Churchill and His Detractors
What mattered most for survivors of the Holocaust, indeed, what made their survival possible, was not only that the Allies had better ideas about democracy and civilization, though of course Britain, America, and the other Western Allies did. It was that they actually won the war. They defeated the Germans on the field of battle—on sea, land, and air, in the hills and in the streets. It’s not enough for us to rest contentedly on the superiority of our ideas. We also have to fight. But at this moment, the fundamental political fact of the last 80 years—that it was an indispensable and untarnishable achievement for the Allies to have destroyed the Third Reich—is itself under revisionist assault. The Internet talk-show host Tucker Carlson last year promoted the podcaster Darryl Cooper, calling him “America's most honest historian,” and airing his claim that Winston Churchill was the “chief villain” of World War II who “escalated” what Hitler supposedly intended to be a limited conflict. As one of this episode’s guests reports in the Wall Street Journal, when the Holocaust-denying podcaster Jake Shields polled his social-media followers about who they thought was “the biggest villain of World War II,” 40.3 percent chose Churchill over Hitler (25.3 percent) or Stalin (25.9 percent). Darryl Cooper or Jake Shields are teaching a new generation of Americans a grotesquely distorted view of our own history. To understand why that is, what can be done about it, and what’s at stake for Jews and America, Mosaic’s editor Jonathan Silver sat down Rabbi Meir Soloveichik and Andrew Roberts. Roberts is a distinguish historian and the author of more than twenty books. His 2018 biography of Churchill, Walking with Destiny, was the rare work that deserved all of the glowing praise it received, and there is perhaps no person living who knows more about the 20th century’s greatest man than Roberts. On November 1, 2022, he was elevated to a peerage as Baron Roberts of Belgravia. Rabbi Soloveichik is the religious leader of Congregation Shearith Israel, the director of the Straus Center for Torah and Western Thought and Yeshiva University, and vice-chair of the U.S. Commission on International Religious Freedom. This conversation took place at a private event held for members of the Tikvah Society. You can learn more about its activities and how to join here.
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Daniel Samet on the U.S.-Israel Relationship and the American National Interest
The relationship between the United States and Israel has long been the subject of intense scrutiny, very often distorted by polemic and conspiracy. One of the most influential articulations of these distortions came in 2007, when the political scientists John Mearsheimer and Stephen Walt argued that American foreign policy had been hijacked by a powerful Israel lobby—an argument that, despite its weaknesses, has shaped how many Americans view relations between these two nations. My guest today, the historian and policy scholar Daniel Samet, has written a new book that aims to set the record straight. Drawing on archival research and much evidence, Samet demonstrates that U.S. policy toward Israel during the cold war was not the product of special pleading and manipulation, but of America’s own strategic interests. By examining presidencies from Harry Truman through George H.W. Bush, he shows how American leaders, whatever their personal sympathies, consistently acted to advance U.S. national priorities—and how Israel sometimes fit into that strategy, and sometimes did not. In this episode of the Tikvah Podcast, Samet joins the host and editor of Mosaic Jonathan Silver to discuss how Israel was perceived in Washington during America’s long struggle with the Soviet Union, what lessons that history holds for America’s rivalry with China today, and why misconceptions about the “Israel lobby” persist in our political discourse. Daniel Samet is a Jean Kirkpatrick Fellow at the American Enterprise Institute, where he works on U.S. foreign policy in the Middle East. His book, U.S. Defense Policy Toward Israel, was published earlier this year.
The Tikvah Fund is a philanthropic foundation and ideas institution committed to supporting the intellectual, religious, and political leaders of the Jewish people and the Jewish State. Tikvah runs and invests in a wide range of initiatives in Israel, the United States, and around the world, including educational programs, publications, and fellowships. Our animating mission and guiding spirit is to advance Jewish excellence and Jewish flourishing in the modern age. Tikvah is politically Zionist, economically free-market oriented, culturally traditional, and theologically open-minded. Yet in all issues and subjects, we welcome vigorous debate and big arguments. Our institutes, programs, and publications all reflect this spirit of bringing forward the serious alternatives for what the Jewish future should look like, and bringing Jewish thinking and leaders into conversation with Western political, moral, and economic thought.
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