It is fitting that Israeli soldiers finally killed Hamas leader Yahya Sinwar in the period between the one-year anniversary of the October 7 attack, and the Hebrew calendar anniversary on the Jewish holiday of Simchat Torah.

The terrorist leader’s death marks a major milestone in the conflict. But it does not — and cannot — mark the end of Israel’s war in Gaza, or beyond. Those who would urge Israel simply to “move on” fail to understand the sheer brutality that Sinwar orchestrated, and the subsequent necessity of Israel’s operations to defeat Hamas and rescue the hostages.

Both of us witnessed Hamas’ brutality as part of programming organized by the Jewish Institute for National Security of America (JINSA), including an annual trip to Israel for retired senior US military officers.

Yet, even given our background, we were horrified by the raw footage of the attack, much of which Hamas terrorists filmed themselves, and a somber walk about and firsthand observation of one of the many devastated kibbutzim, Kfar Azza.

More alarming is that the full scope of the October 7 atrocities still has not reached the American public. The coordinated air, land, and sea invasion, and the barbaric violence against civilians, including rape, sexual violence, and mutilation, indicated this was not a spontaneous outbreak of violence — but a prepared assault fueled by the conditioned hatred of Jews.

Beyond the death and destruction, the October 7 attack also overturned Israelis’ sense of security and eroded deterrence against enemies even beyond Gaza.

But Sinwar also terrorized his own people. He served 22 years of four life sentences in Israeli prison for murdering Palestinians in his role as a brutal Hamas enforcer, until he was released in 2011 as part of a hostage release deal. Under his rule, life in Gaza even before 10/7 was subverted to Hamas’ military goals. Money and supplies were diverted, and civilian structures were appropriated to build “fortress Gaza” — turning the entire territory into a series of above- and below-ground fortified positions designed specifically for fighting the Israel Defense Forces (IDF).

Sinwar wanted to bring the fight to the streets of Gaza because he knew they housed a potent weapon against Israel — not any of the tunnels or hidden bombs, but the Palestinian civilians that Hamas would ensure were caught in the crossfire.

Recognizing that Hamas cannot defeat Israeli forces militarily, Sinwar’s strategy sought to maximize the number of civilian casualties in Gaza to rally international pressure against Israel.

With this strategy, Sinwar intentionally sacrificed the lives of thousands of Gazans, and turned that of hundreds of thousands into a living hell. As we detailed in a JINSA report following our trip, Hamas has serially violated international law by turning the civilian population of Gaza into human shields to hide its fighters and weapons inside hospitals, schools, humanitarian zones, and United Nations facilities. It tried to force civilians to remain in harm’s way, attacking those who sought to flee. For those lucky to escape, Hamas nevertheless ensured their suffering by repeatedly stealing humanitarian aid, preventing it from reaching the civilians who need it.

Hamas then weaponized this suffering against Israel, waging a disinformation campaign to blame Israel for civilian deaths and insufficient aid. Indeed, Hamas’s disinformation has generated public pressure that has led to widening public tensions between the United States and Israel, including pauses of key US weapons transfers and threats of an arms embargo.

One senior IDF officer told us that international pressure against Israel was more challenging to Israeli success than any battlefield complexities.

With Sinwar’s death, that pressure is already mounting again, urging Israel to declare victory and end in the war in Gaza. To be sure, the death of Sinwar, the man responsible for the deadliest attack against Jews since the Holocaust, sends a clear message that anyone who threatens Israeli lives will face justice. But it does not mark the end of the war in Gaza, nor the start of a new, more secure future for either Israelis or Palestinians.

This war is not about punishing the man responsible for 10/7. It is about ensuring that 10/7 can never happen again. It is about bringing home the remaining 100 hostages that were taken from their homes and kept, inhumanely, in tunnels for the last year. And it is about dismantling the remaining military capability of Hamas so that Gazans do not, once again, live under a terrorist regime. As long as Hamas persists in Gaza, these goals are not met and this war will continue.

The end of Sinwar is not the end of the war. Hamas will survive Sinwar unless Israel finishes its mission in Gaza. The United States should redouble its support for Israel to prevent the terrorist group’s next leader from rebuilding and not avoid pursuing victory for short term domestic political gain.

Rear Admiral (ret.) Paul Becker served as Director of Intelligence for the Joint Chiefs of Staff and participated in JINSA’s 2024 Generals and Admirals Program. Ari Cicurel is Assistant Director of Foreign Policy at JINSA.

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