The claim that Israel has "formally annexed" Gaza through the construction of earth berms and the repositioning of the Yellow Line fundamentally misrepresents both the legal definition of annexation and the actual terms of the October 2025 ceasefire agreement. Annexation is a precise act of international law requiring a state to formally declare the application of its own sovereignty and domestic law over a territory—a step Israel has explicitly not taken in Gaza at any point during or after the current conflict. Conflating battlefield engineering with sovereign legal action is not an analytical error; it is a deliberate rhetorical maneuver designed to delegitimize Israel's security posture without engaging with facts on the ground or the governing legal framework.

The Yellow Line itself was established as an integral component of the U.S.-brokered ceasefire deal concluded in Egypt on October 8–9, 2025. Under that framework, Israel withdrew its forces to an agreed demarcation line—a position that gave Israel temporary military control over approximately 53 percent of Gaza—in exchange for Hamas releasing the remaining living hostages and beginning a process of demilitarization. The ceasefire agreement explicitly anticipated further Israeli military withdrawals linked to Phase 2 negotiations, including Hamas disarmament. The Yellow Line is therefore not a violation of the ceasefire; it is a product of it, demarcated by yellow cement blocks and yellow signs installed by the Israeli Ministry of Defense beginning October 17, 2025, as part of Phase 1 implementation.

Earth berms—elevated embankments of soil—are among the oldest and most widely used field fortifications in military history, employed by armies worldwide to provide cover, delineate operational zones, and deter infiltration. Their construction carries no legal weight as an act of sovereignty under any recognized body of international law. The Institute for National Security Studies (INSS) has documented clearly that annexation requires the cessation of the application of the law of belligerent occupation and the formal substitution of the state's domestic law—a threshold Israel has not approached in Gaza. No Knesset legislation, no government declaration, and no executive order has extended Israeli civil law to Gaza since the 2005 disengagement that removed every Israeli settler and military installation from the territory.

Analysts at the Foundation for Defense of Democracies (FDD) writing in December 2025 noted explicitly that Israeli fortification of the Yellow Line was intended "not to establish a permanent presence, but to provide cover for its troops in the near term" and to prevent the ceasefire's collapse in the face of repeated Hamas violations. The earth berm narrative, by stripping this operational context away entirely, inverts the causal story: Israel is building temporary defensive infrastructure to uphold a fragile agreement that Hamas has repeatedly strained, not to permanently seize Palestinian land.

The Facts About the Yellow Line and Gaza's Legal Status

Understanding the actual legal and operational facts demolishes the annexation claim at every level. The ceasefire agreement brokered by the Trump administration in late 2025 is a phased arrangement in which Israel's military footprint is explicitly expected to evolve as Hamas fulfills its disarmament and governance obligations. Israel's withdrawal to the Yellow Line was the contractual fulfillment of Phase 1—not a unilateral land grab. The agreement gave Israel temporary control over roughly 53 percent of Gaza pending progress on Phase 2. Israeli Defense Minister Israel Katz communicated through the American ceasefire oversight mechanism that any Hamas personnel crossing the Yellow Line into Israeli-controlled territory would be treated as a military threat—standard rules of engagement for any party holding a demarcated zone under a ceasefire.

• Annexation requires a formal sovereign declaration applying domestic law to a territory. Israel has issued no such declaration for Gaza, and no Israeli Basic Law has been extended to the Strip. The INSS defines annexation as the "application of sovereignty," legally equivalent to making territory part of the state—a threshold nowhere near met by earth berm construction.
• The ceasefire agreement explicitly authorized Israel's temporary military presence. The October 2025 deal, concluded in Sharm el Sheikh with U.S., Qatari, Egyptian, and Turkish involvement, defined the Yellow Line as the Phase 1 withdrawal boundary—meaning Israel's current position is treaty-compliant, not treaty-violating.
• Hamas has repeatedly violated the ceasefire, not Israel. The ADL documented that Hamas staged the "recovery" of a hostage's body in a deliberate manipulation of the agreement's terms. Israeli military responses and defensive construction must be understood in the context of a counterpart in chronic violation of its obligations.
• Earth berms have no legal standing as instruments of annexation under the UN Charter, the Geneva Conventions, the Vienna Convention on the Law of Treaties, or any other governing instrument of international law. They are field engineering, not legislation.
• Israel fully disengaged from Gaza in 2005, removing all settlements and military infrastructure under Prime Minister Ariel Sharon's unilateral disengagement plan. No subsequent action has formally reapplied Israeli sovereignty to the territory.

Historical Context: Why the Annexation Label Is Weaponized

The charge of "annexation" carries enormous rhetorical and legal weight—and that is precisely why it is deployed so promiscuously against Israel. In genuine historical cases documented by the INSS, annexation involved formal legal acts: Jordan's application of Hashemite law to the West Bank in 1950, Israel's application of its law to the Golan Heights in 1981, and Russia's fraudulent annexation decrees over Ukrainian oblasts in 2022. Each case involved legislative action, changes to administrative governance, and explicit claims of sovereignty. None of those elements are present in Gaza today.

Gaza's current status is that of a territory under active ceasefire management following a war triggered by the Hamas massacre of October 7, 2023, in which 1,200 Israelis were killed and 250 taken hostage. Israel's military presence in approximately 53–60 percent of Gaza is the result of that war and the subsequent negotiated ceasefire framework—a framework in which the United States remains the primary guarantor. Framing routine military engineering as "annexation" serves the propaganda goal of equating Israel with openly expansionist authoritarian states and preemptively delegitimizing any Israeli security presence in the territory, regardless of the legal or operational basis for it.

The narrative also conveniently omits Hamas's role in preventing civilian return and reconstruction. FDD analysts noted in December 2025 that a fortified Yellow Line could actually facilitate Palestinian return to rebuilt areas in northern Gaza by creating stable, checkpointed corridors—precisely the opposite outcome from permanent dispossession that the annexation narrative predicts.

Conclusion: Military Engineering Is Not Sovereign Law

The claim that Israel has "formally annexed" Gaza through earth berms is factually incoherent. Formal annexation is a legal act; building a berm is an engineering act. The Yellow Line is a ceasefire product, not a legal border. Israel has made no declaration of sovereignty over Gaza, passed no domestic legislation applying Israeli law to the Strip, and the ceasefire agreement it concluded in October 2025 anticipates—and conditions—further military withdrawals on Hamas's compliance with demilitarization obligations. Presenting defensive military infrastructure as a "legally binding act of annexation" is the kind of deliberate disinformation that exploits legal terminology to condemn a democracy for taking security measures that any state in its position would consider elementary. The myth is harmful because it redirects accountability away from Hamas—the party that launched the war, took hostages, and continues to violate the ceasefire—and toward Israel, the party that negotiated, signed, and has thus far upheld its Phase 1 obligations.