The World at War: 240,000 Dead in 2025 as Armed Conflicts Hit a Post-Cold War Peak

The number of active armed conflicts worldwide reached 61 in 2024, the highest figure since the end of World War II [1]. ACLED recorded 204,605 conflict events between December 2024 and November 2025, producing nearly 240,000 fatalities — a 23% increase over the prior twelve months [2]. Global military spending hit $2.7 trillion in 2024, the steepest year-on-year rise since the Cold War ended [3]. These are not abstract numbers. They represent a measurable reversal of the post-Cold War decline in organized violence that scholars once cited as evidence of a "long peace."

The Scale: How Many Wars, How Many Dead

ACLED classifies ten conflicts as "extreme" severity in 2025: the Israeli-Palestinian conflict, Myanmar, Syria, Mexico, Nigeria, Ecuador, Brazil, Haiti, Sudan, and Pakistan [2]. The deadliest by reported fatalities over the past year include Ukraine, Sudan, the Israeli-Palestinian conflict, Myanmar, Nigeria, Somalia, Syria, Mexico, Brazil, and the Democratic Republic of the Congo [2].

Casualty estimates for individual conflicts remain contested. In Sudan, approximately 20,373 people were killed between August 2024 and August 2025 [2]. The Israeli-Palestinian conflict recorded roughly 21,417 deaths in the same window, though the cumulative toll since October 2023 exceeds 70,000 [4]. Myanmar's civil war has killed over 15,000 since mid-2024 [2]. Ukraine's casualty figures remain partially classified by both Kyiv and Moscow, but estimates from the International Institute for Strategic Studies put combined military casualties well above 500,000 since February 2022 [5].

For context, the post-Cold War period from 1990–2010 saw an average of roughly 30–40 active state-based conflicts per year, with battle-related deaths averaging between 50,000 and 100,000 annually, according to the Uppsala Conflict Data Program [6]. The current period has roughly doubled or tripled those averages — a sharp departure from the trajectory that led scholars like Steven Pinker to argue the world was becoming structurally less violent.

Source: ACLED / Uppsala Conflict Data Program / Our World in Data

Data as of Mar 20, 2026CSV

The Displaced: 117 Million People Without a Home

By mid-2025, 117.3 million people worldwide were forcibly displaced — one in every 67 human beings on earth [7]. This includes 42.5 million refugees who crossed international borders and 67.8 million internally displaced persons (IDPs) who fled within their own countries [7]. UNHCR projects the total will reach 139.3 million by end of 2025 [7].

The five largest displacement crises track directly to the five deadliest conflicts. Sudan alone has displaced over 10 million people internally and driven millions more across borders into Chad, South Sudan, and Egypt [8]. The war in Ukraine displaced an estimated 6.3 million refugees into Europe and 3.7 million internally [7]. Gaza's population of 2.3 million has been almost entirely displaced at least once, with most displaced multiple times [4]. Myanmar's civil war has displaced over 3 million people [5]. Afghanistan, despite the end of major combat operations, still accounts for over 6 million refugees abroad, the largest single refugee population worldwide [7].

The humanitarian system designed to respond to these crises is failing. The UN's consolidated appeal for 2025 originally sought $47 billion to reach 190 million people [9]. By mid-year, that figure was "hyper-prioritized" down to $29 billion covering only 114 million of the most desperate cases [9]. Even so, by December 2025, only 28% of the reduced appeal — roughly $12 billion — had been funded [9]. Total international humanitarian assistance dropped by nearly $5 billion in 2024, the largest single-year decline ever recorded [9].

Who Sells the Weapons

The five largest arms exporters between 2020 and 2024 were the United States (43% of global exports), France (11%), Russia (now third after a 64% decline from 2015–19), China (5.8%), and Germany (4.2%) [10]. These five states accounted for nearly three-quarters of all international arms transfers.

Ukraine became the world's largest arms importer in this period, with imports increasing approximately 100-fold compared to 2015–19, as at least 35 states delivered major weapons, mostly as military aid [10]. In the Middle East, half of all arms imports were supplied by the United States, followed by Italy (12%), France (9.7%), and Germany (7.6%) [11]. Israel received considerable volumes of US military aid throughout 2024, including missiles, guided bombs, and armored vehicles used in its operations in Gaza, Lebanon, and Yemen [11].

The arms industry has profited accordingly. SIPRI's Top 100 arms-producing companies saw combined revenues surge in 2024, driven by demand from the Ukraine and Gaza wars and a generalized rearming trend [12]. Israel's military expenditure alone increased 65% in a single year to $46.5 billion — the steepest annual spike since the 1967 Six-Day War [3].

International humanitarian law prohibits arms transfers where there is a clear risk of use in war crimes. The Arms Trade Treaty (ATT), ratified by 113 states, requires exporters to assess this risk. In practice, enforcement is minimal. The United States, Russia, and China have not ratified the ATT. Multiple legal challenges and parliamentary debates in the UK, Canada, the Netherlands, and Italy have questioned continued arms sales to Israel given documented civilian harm in Gaza, but sales have generally continued [11].

Source: World Bank — World Development Indicators

Data as of Feb 24, 2026CSV

Great Powers: Fighting Directly, Fighting by Proxy

The distinction between direct great-power military participation and proxy support has blurred. In Ukraine, Russia fights directly while receiving arms, components, and troops from Iran, North Korea, and — through dual-use technology channels — China [4]. The West supports Ukraine with over $100 billion in military and financial aid but does not engage Russian forces directly, making Ukraine simultaneously a direct war for one great power and a proxy conflict for several others [5].

Sudan's war exhibits classic proxy dynamics. The Sudanese Armed Forces (SAF) receive backing from Egypt, Turkey, and Iran, while the Rapid Support Forces (RSF) have been supported by the United Arab Emirates and, through the Wagner Group, Russia [13]. Wagner provided the RSF with surface-to-air missiles in exchange for access to Sudan's gold mines [13]. Saudi Arabia initially remained neutral before shifting support toward the SAF [13]. No great power has troops on the ground, but several are deeply invested in the outcome.

Does external involvement prolong wars? The empirical record suggests yes. A 2021 study by the International Crisis Group found that conflicts with significant external arms supplies lasted on average 300% longer than those without [14]. Russia's supply of the RSF, combined with UAE logistics support, has sustained a force that might otherwise have collapsed. Conversely, Western arms to Ukraine have prevented a rapid Russian victory, which — depending on one's perspective — either prolonged suffering or prevented the forced subjugation of 44 million people.

The honest answer is that external involvement both prolongs wars and prevents certain outcomes. Whether that tradeoff is worthwhile depends entirely on which outcome one considers worse.

The Hardest Question: "Unprovoked"?

Three conflicts are most commonly described as unprovoked aggression in Western media: Russia's invasion of Ukraine, Israel's military operations in Gaza, and Myanmar's military junta's war against its own population.

Russia-Ukraine. The standard Western framing is that Russia's February 2022 invasion was an unprovoked imperial land grab. Russia and realist scholars offer a different account. John Mearsheimer, the University of Chicago political scientist, has argued since 2014 that NATO's eastward expansion — particularly the 2008 Bucharest Summit declaration that Ukraine "will become" a NATO member — represented what Russian leaders perceived as an existential security threat [15]. In a November 2025 address to the European Parliament, Mearsheimer restated that the war was "not an unprovoked act of Russian aggression but a direct consequence of Western policies" [15].

Critics of this view, including scholars at the European University Institute, counter that Eastern European states sought NATO membership because of a well-documented history of Russian coercion — they were not "pulled" into NATO but pushed toward it by Russian behavior [16]. Ukraine first applied for NATO membership in 2008 and accelerated that push after Russia's 2014 annexation of Crimea [16]. The realist frame, critics argue, denies agency to smaller states and implicitly concedes that great powers have a right to veto their neighbors' alliances.

Both arguments have force. NATO expansion did alarm Russian security planners — declassified documents show consistent warnings from US diplomats about this risk dating to the 1990s. Russia's invasion also violated the UN Charter and the 1994 Budapest Memorandum in which Russia guaranteed Ukraine's territorial integrity. These facts coexist uncomfortably.

Israel-Gaza. Israel frames its operations as a response to Hamas's October 7, 2023 attack, which killed approximately 1,200 Israelis — the deadliest day for Jewish people since the Holocaust [4]. Hamas and Palestinian factions point to 57 years of military occupation, the blockade of Gaza since 2007, and the displacement of 750,000 Palestinians in 1948 as the structural causes. The International Court of Justice issued a 2024 advisory opinion that Israel's occupation of Palestinian territories is unlawful [4]. The cumulative death toll in Gaza since October 2023 has surpassed 70,000 [4], with international organizations documenting destruction of the majority of Gaza's housing, hospitals, and infrastructure.

Myanmar. The military junta's February 2021 coup overturned an elected government. The junta cites constitutional authority and alleges electoral fraud in the 2020 elections. The opposition National Unity Government and ethnic armed organizations point to decades of military rule, the Rohingya genocide, and systematic repression. Myanmar's GDP contracted 12% in 2021 following the coup [17]. Unlike Ukraine and Gaza, Myanmar's war receives relatively little great-power attention, a fact that both realist and liberal scholars attribute to Myanmar's limited strategic significance to the major powers.

Non-State Armed Groups: Two-Thirds of Violence Against Civilians

Approximately two-thirds of all violence targeting civilians worldwide in 2025 was committed by non-state armed groups — militias, insurgencies, cartels, and gangs — rather than state militaries [18]. The ICRC estimates that 204 million people live in areas controlled or contested by such groups, with over 380 armed groups of humanitarian concern globally [18].

This pattern is concentrated where governance has failed. Mexico saw an 18% increase in the lethality rate of clashes between cartels in 2025 [18]. In the Sahel — Mali, Burkina Faso, Niger — jihadist groups and local militias have displaced state forces across vast territories. Haiti's gang coalitions control roughly 80% of Port-au-Prince.

A finding that complicates simple narratives: 85% of armed groups that control territory provide some form of governance — public services, security, or taxation [18]. They are not merely destructive forces but often fill vacuums left by absent or collapsed states. Resource competition, particularly over gold, oil, and drug trafficking routes, correlates strongly with the presence and persistence of non-state armed groups.

Does Anything Work? Peacekeeping, Ceasefires, and Sanctions

The UN's own assessment is sobering. Across 32 military peacekeeping operations deployed to civil war settings, researchers identified 19 cases of full or partial success and 13 full or partial failure [19]. A study published in the Journal of Politics found that UN peacekeeping does reduce conflict recurrence: doubling peacekeeping expenditure lowers the risk of a conflict reigniting from 40% to 31% [20]. Peacekeepers also shorten the time to reach negotiated settlements.

But the overall picture is mixed. Jean-Pierre Lacroix, the UN's Under-Secretary-General for Peace Operations, acknowledged in 2025 that the UN is "good at peacekeeping" but "not good at war fighting" [19]. Peacekeeping works best when parties have already reached a settlement and need monitoring. It is far less effective when imposed on active, high-intensity wars.

Economic sanctions have an even more checkered record. Comprehensive studies find that sanctions achieve their stated policy objectives roughly 20–30% of the time. Targeted sanctions (asset freezes, travel bans) have somewhat higher success rates but are routinely circumvented through shell companies and third-party states.

The five-year durability test — whether a conflict achieves five or more years without resumed major violence after intervention — filters out most apparent successes. Colombia's 2016 peace accord has largely held but faces ongoing violence from FARC dissident groups. South Sudan's 2018 agreement collapsed almost immediately. The pattern suggests that the structural drivers of conflict — governance failure, resource competition, ethnic exclusion — persist long after ceasefires are signed.

The Economic Toll

Source: FRED / U.S. Energy Information Administration

Data as of Mar 16, 2026CSV

The Institute for Economics and Peace estimated the global economic impact of violence at $19.1 trillion in 2024, up $717 billion from the prior year [21]. Direct GDP losses from war and conflict totaled an estimated $462 billion worldwide [21].

Country-level effects are stark. Sudan's GDP contracted by 29.4% in 2023 and a further 14% in 2024 — a near-total economic collapse [17]. Ukraine's economy shrank 28.8% in 2022 before partially recovering [17]. Israel, despite a massive military spending increase, saw GDP growth fall to just 0.87% in 2024, down from 9.4% in 2021 [17]. Myanmar has experienced cumulative GDP losses exceeding 20% since the 2021 coup [17].

Germany, which depended on Russian gas, experienced two consecutive years of economic contraction in 2023–24 — a secondary effect of the Ukraine war's energy disruption [17]. Global military spending per capita reached $334 in 2024, the highest since 1990 [3]. The UNDP noted that the world could eliminate extreme poverty for roughly $300 billion — about one-ninth of current military budgets [22].

Second-order effects ripple outward. The disruption of Ukrainian grain exports in 2022 contributed to food price spikes across Africa and the Middle East. Conflict-related displacement strains host countries' public services and labor markets. Oil price volatility — WTI crude swung from $62 to $98 per barrel in the first three months of 2026 alone — reflects ongoing geopolitical risk premiums tied to Middle East and Russia-related supply uncertainty [23].

The Trend Line

The data points in one direction. Armed conflicts have increased every year for the past decade. Casualty rates have returned to levels not seen since the wars of the 1990s in the former Yugoslavia and Central Africa. Displacement has set consecutive records. Military spending is at an all-time high in nominal terms. Humanitarian funding is at a record low relative to need.

Whether this trend continues depends on variables that are genuinely uncertain: whether the Ukraine war ends or escalates, whether the Gaza conflict spreads further across the region, whether Sudan's war triggers state collapse, and whether great-power competition continues to fuel rather than restrain violence.

What is not uncertain is the cost. Nearly a quarter-million people died in armed conflicts in 2025. Over 117 million have been driven from their homes. The international systems designed to prevent and respond to mass violence are underfunded, overstretched, and, in several cases, actively undermined by their most powerful members.