Abstract:

Israel enters 2026 with genuine short-term military and economic strengths: unconditional American financial and military support, record defence exports of nearly fifteen billion dollars, and a Bank of Israel growth projection of 3.8 percent for the year. This article does not dismiss these strengths. It argues instead that sustainability is not measured by what a state can do next month but by what it can sustain across a generation, and that measured by that standard, four structural pressures are compounding in ways that no military campaign resolves. The first is fiscal: public debt has climbed from 60 percent of gross domestic product before October 2023 to a projected 73 percent by end of 2026, with defence spending reaching 7.81 percent of GDP in 2025. The second is demographic: Israel is experiencing its first sustained negative net migration in modern history, with the emigration concentrated among educated native-born Israelis aged 25 to 45. The third is diplomatic and legal: International Criminal Court arrest warrants now effectively confine Israeli leadership in their international movement, with all 124 member states legally obligated to detain those named. The fourth is the human cost of the campaign itself, now documented at over 72,000 confirmed deaths and 377,000 unaccounted for. Each pressure is individually significant. Together they describe a trajectory whose direction is visible in the data produced by Israeli institutions themselves.

Main Article:

Sustainability is not the same as strength. A state can be formidable in the near term and structurally compromised in the longer term simultaneously, and the failure to distinguish between these two conditions produces the two symmetrical errors that dominate commentary on Israel in 2026: the error of those who dismiss its genuine capabilities, and the error of those who treat those capabilities as an answer to questions they do not address.

This article attempts neither error.

Israel enters the second half of 2026 with real and documentable strengths. The United States remains its unconditional military and financial underwriter. In 2024, American security assistance briefly accounted for more than one third of the Israeli defence budget, according to the Israel Policy Forum. (1) Defence exports reached a record 14.8 billion dollars in 2024, a 13 percent increase over 2023 and more than double the figure of five years earlier, with European countries accounting for 54 percent of total contracts. (2) The Bank of Israel projects 3.8 percent GDP growth for 2026. (3) The Israeli military has conducted the most sustained multi-front air campaign since 1973, including operations in Gaza, Lebanon, Yemen, and Iran, while reducing its reserve mobilisation from 300,000 to approximately 40,000 without economic collapse. (3) These are facts. Any analysis that does not begin by acknowledging them is not analysis.

The question sustainability asks is different. It asks not what a state can do this month but what it can maintain across a decade, and whether the trajectory visible in current data points toward consolidation or toward compounding stress. Examined from that frame, four structural pressures emerge from Israeli sources themselves, and none of them is resolved by military success on any front.

The first is fiscal.

Before October 2023, Israeli public debt stood at a stable 60 percent of gross domestic product, a ratio the government had spent two decades reducing from a peak above 70 percent in the late 2000s. (4) By end of 2025, the International Monetary Fund's Article IV mission documented public debt at 68.6 percent of GDP. (4) Trading Economics projects the ratio reaching 73 percent by end of 2026. (5) The central government deficit swung from a surplus of 0.6 percent of GDP in 2022 to a deficit of 6.8 percent in 2024, driven by defence spending that reached 7.81 percent of GDP in 2025, nearly double the pre-war level of approximately 4.5 percent. (4) (6) The IMF mission noted that without additional fiscal adjustment, public debt will continue rising, and that civilian spending faces increasing pressure from elevated defence and interest costs. (4) The Jerusalem Post, drawing on Bank of Israel data, reported that the 3.8 percent growth projection largely reflects delayed consumption and government spending rather than genuine productive expansion, with per capita GDP remaining below its pre-war trajectory. (3) The fiscal position is not one of collapse. It is one of structural strain accumulating faster than it is being addressed.

The second is demographic.

Israel is experiencing a sustained negative net migration balance for the first time in the modern history of the state. In 2024, departures exceeded arrivals by 26,000. In 2025, the gap widened to approximately 37,000 according to the Taub Center for Social Policy Studies, and negative net migration is projected to continue into 2026. (7) The Central Bureau of Statistics recorded 69,300 residents leaving Israel in 2025 while only 19,000 returned, with new immigration falling to approximately 24,600, roughly one third below the 2024 figure. (8) Population growth fell to between 0.9 and 1.1 percent in 2025, the lowest rate since the founding of the state. (7) (8) What makes the demographic picture structurally significant rather than cyclically manageable is the composition of those leaving. A Tel Aviv University study compiled by economists Itai Ater, Nittai Bergman, and Doron Zamir documented that approximately 90,000 Israelis left between January 2023 and September 2024, including hundreds of PhDs, thousands of engineers, and hundreds of medical doctors. (9) The Central Bureau of Statistics reported that 60 percent of those who left in 2023 held at least a bachelor's degree. (10) By 2025, 12 percent of all Israelis holding doctoral degrees were living abroad for three years or more. (10) Nobel laureate Aaron Ciechanover described the brain drain as an existential threat. A Knesset member described it not as a wave but as a tsunami. The Israel Democracy Institute found in late 2025 that 27 percent of Israelis were considering leaving the country. (9) These assessments did not come from outside critics. They came from Israeli researchers, Israeli institutions, and Israeli legislators examining Israeli data.

The third is diplomatic and legal.

The International Criminal Court issued arrest warrants for Prime Minister Benjamin Netanyahu and former Defence Minister Yoav Gallant on 21 November 2024. (11) The appeals chamber upheld those warrants in December 2025. (11) In May 2026, CNN reported that the ICC had additionally sought sealed warrants for Finance Minister Bezalel Smotrich, National Security Minister Itamar Ben-Gvir, and two military officials, and WAFA reported the warrants had been issued. (11) Netanyahu cancelled his attendance at the papal inauguration in Rome in May 2025 after Italian officials declined to guarantee he would not be detained. (11) Eight countries have issued entry bans to far-right Israeli ministers. (11) All 124 ICC member states, encompassing every European Union country, the United Kingdom, Canada, Japan, Australia, Brazil, and South Korea, are legally obligated under the Rome Statute to arrest any individual subject to an ICC warrant who enters their territory. (11) The practical consequence is that Israeli governmental leadership is now constrained in its international movement to a degree without precedent in the history of the state. The diplomatic isolation compounds the legal constraint: the United Nations Secretary-General added Israeli armed and security forces to the annual blacklist for conflict-related sexual violence in May 2026, citing verified incidents involving Palestinian detainees across 2023, 2024, and 2025. (12) Israel severed diplomatic ties with the Secretary-General in response. (12) The break did not change the listing.

The fourth pressure is the human cost of the campaign itself, and it is the one that shapes all the others.

The Gaza Health Ministry documented 72,049 Palestinian deaths as of February 2026. (13) A peer-reviewed Lancet Global Health survey published in February 2026, drawing on structured field data collected from 2,000 households across 200 locations in Gaza, estimated 75,200 violent deaths in the first fifteen months of the war alone, representing approximately 3.4 percent of the pre-war population, with the study period ending before the resumption of full-scale operations in early 2025. (14) The Lancet noted that conditions deteriorated significantly after the survey period, with famine declared in parts of Gaza in August 2025 and health infrastructure comprehensively destroyed. (14) A study by Yaakov Garb, a researcher at Ben-Gurion University, examining population displacement and registration data, estimated that 377,000 Palestinians are unaccounted for since the war began, approximately 17 percent of the pre-war population of 2.23 million, with the gap between the confirmed figure and the total unaccounted existing because entire families were erased in single strikes with no survivor to report them. (15) These figures are not produced by adversarial sources. They are produced by peer-reviewed academic journals, by the United Nations system, and in the case of the Garb study, by a researcher at an Israeli university. Their significance for sustainability is structural: a campaign of this documented scale does not become easier to sustain internationally over time. It becomes harder.

A state can sustain a military campaign indefinitely when it commands four resources: financial capacity, a renewable manpower base, domestic political consensus, and international cover. Israel currently commands two of these four without serious qualification. American financial and military backing remains intact, though the Israel Policy Forum has documented the structural limits that make its loss more consequential than the nominal dollar figure suggests. (1) International cover from Washington persists, though the Brookings Institution documented in August 2025 that American public support for Israeli military operations had declined substantially, with 45 percent of American voters believing Israel was committing genocide against Palestinians and only 27 percent expressing support for Netanyahu. (16) The fiscal position is under compounding strain. The manpower base is emigrating. The domestic consensus is fracturing along lines that Israeli newspapers document in their own polling.

None of this means Israel faces imminent collapse. States under structural stress can persist for decades. The question sustainability asks is not whether a state can endure the next month but whether the trajectory it is on, if sustained, leads toward stabilisation or toward a compounding of the pressures already visible in the data. The IMF, the Taub Center, Tel Aviv University economists, the Bank of Israel, and the Israeli Central Bureau of Statistics have each produced assessments pointing in the same direction. They are not predicting imminent failure. They are documenting a trajectory whose destination, if the current variables are held constant, is not a stronger state.

A state that can wage war on four fronts simultaneously is strong. A state that is paying for that war by drawing down the fiscal space it spent two decades building, losing the educated workforce that sustains its technology sector and its military officer pipeline, watching its government leadership confined to a shrinking range of international destinations, and producing a documented civilian death toll that its own allied governments find increasingly difficult to defend in domestic political terms is not on a trajectory toward strategic consolidation.

Measured across a generation, the data points toward a different answer than the one the near-term military picture suggests.

References:

(1) Israel Policy Forum. "U.S. Security Assistance and the Israeli Budget." Israel Policy Forum, May 11, 2026.

(2) Reuters. "Amid Gaza War, Israel Defence Exports Jump 13 Percent in 2024 to Record 15 Billion." Reuters, June 4, 2025.

(3) Jerusalem Post. "Debt, Defense, and Disruption: The True Cost of Israel's Multi-Front War." Jerusalem Post, April 10, 2026.

(4) International Monetary Fund. "Israel: Staff Concluding Statement of the 2026 Article IV Mission." IMF, February 5, 2026.

(5) Trading Economics. "Israel Government Debt to GDP." Trading Economics, accessed May 2026.

(6) SIPRI via Statista. "Military Expenditure as a Share of GDP in Israel from 2000 to 2025." Statista, April 27, 2026.

(7) Taub Center for Social Policy Studies. "Israel 2025: A Demographic Crossroads." Taub Center, January 4, 2026.

(8) Ynet News. "Nearly 70,000 Israelis Left in 2025 as Negative Migration Balance Persists." Ynet, December 31, 2025.

(9) Times of Israel. "Figures Show Brain Drain Spiked in 2023 to 2024 as Well-Educated Fled Overhaul and War." Times of Israel, December 1, 2025.

(10) Times of Israel. "Brain Drain: 12 Percent of Israelis with PhDs Lived Abroad Last Year, State Report Finds." Times of Israel, December 17, 2025.

(11) CNN. "Far-Right Israeli Minister Says ICC Seeking Warrant for His Arrest." CNN, May 19, 2026; WAFA, "ICC Issues Secret Arrest Warrants for More Israeli Officials," May 17, 2026.

(12) PBS NewsHour. "Israeli and Russian Forces Added to UN Blacklist for Sexual Violence in Conflict Zones." PBS, May 30, 2026.

(13) WAFA Palestinian News Agency. "Gaza Death Toll Surges to 72,049." WAFA, February 12, 2026.

(14) Lancet Global Health. "From Enumeration to Inference: What the Gaza Mortality Survey Reveals." Lancet Global Health, February 18, 2026.

(15) Housing and Land Rights Network. "Harvard Study Finds Israel Disappeared Nearly 400,000 Palestinians in Gaza." HLRN, citing Yaakov Garb, Ben-Gurion University, June 24, 2025.

(16) Brookings Institution. "Support for Israel Continues to Deteriorate, Especially Among Democrats and Young People." Brookings, August 6, 2025.