New Data Shows Global Armed Conflicts at Highest Level Since World War II

The Uppsala Conflict Data Program (UCDP), the world's longest-running systematic tracker of organized violence, recorded 65 state-based armed conflicts worldwide in 2025 — the highest number since it began collecting data in 1946 [1]. The number of direct interstate conflicts doubled from the previous year to eight, a category that had been nearly extinct for decades [2]. Approximately 245,000 people were killed in fighting during the year, the deadliest toll since the Rwandan genocide in 1994 [3].

These numbers, released by researchers at Uppsala University and the Peace Research Institute Oslo (PRIO) in June 2026, have prompted a wave of headlines declaring armed conflict at its worst since World War II. But what exactly do these figures measure? How much of the spike is driven by a few catastrophic wars versus a genuine global proliferation? And what, if anything, can realistically be done?

How Conflicts Are Counted — and Why Definitions Matter

The "highest since WWII" claim rests primarily on the UCDP dataset, which defines a state-based armed conflict as organized violence between at least two parties — one of which is a government — that produces at least 25 battle-related deaths in a calendar year [4]. A conflict that crosses 1,000 deaths in a year is classified as a "war." In 2025, 13 of the 65 active conflicts met that threshold [1].

The Armed Conflict Location & Event Data Project (ACLED), another major source, uses a different methodology. ACLED imposes no minimum casualty threshold and codes individual political violence events — including protests, riots, and troop movements — from media and NGO reports [5]. Because its bar for inclusion is lower, ACLED tends to capture a larger universe of political violence events, though its sub-national data has been flagged for uneven quality control [6].

SIPRI, the Stockholm International Peace Research Institute, tracks military expenditure and arms transfers rather than conflict counts directly, but its yearbook draws on UCDP data for conflict analysis [7].

Despite methodological differences, the major datasets converge on the core trend: armed conflicts have roughly doubled since 2010, when UCDP recorded 32 active conflicts [4]. The disagreement is more about magnitude and categorization at the margins than about directionality.

Source: Uppsala Conflict Data Program (UCDP)

Data as of Jun 9, 2026CSV

The Numbers: Conflicts, Deaths, and Displacement

By UCDP's count, the 65 conflicts of 2025 spanned 35 countries [3]. The eight interstate conflicts included Russia-Ukraine, Iran-Israel, India-Pakistan border clashes, Thailand-Cambodia, Israel's operations in Syria and Yemen, Afghanistan-Pakistan border fighting, and US/UK operations against Houthi forces in the Red Sea [1].

The remaining 57 were intrastate conflicts — governments fighting armed groups within their borders — though many had significant foreign involvement [1].

Source: UCDP / PRIO

Data as of Jun 9, 2026CSV

The 245,000 battle-related deaths in 2025 represent a sharp increase from approximately 187,000 in 2024 and 129,000 in 2023 [3]. One-sided violence against civilians was particularly acute: roughly 76,500 deaths were attributed to deliberate attacks on civilians, compared with 14,200 the year before [3].

For displacement, UNHCR reported 123.2 million forcibly displaced people at the end of 2024, equivalent to 1 in every 67 people on Earth [8]. More than one-third of all displaced people came from just four countries: Sudan (14.3 million), Syria (13.5 million), Afghanistan (10.3 million), and Ukraine (8.8 million) [8]. By mid-2025, the number had dropped slightly to 117.3 million — a 5% decline — though researchers cautioned this reflected returns to some areas rather than any resolution of underlying conflicts [9].

Source: UNHCR Population Data

Data as of Dec 31, 2025CSV

The Outsized Role of a Few Wars

Three conflicts accounted for the bulk of 2025's death toll: Russia's invasion of Ukraine, Israel's bombardment of Gaza, and the civil war in Sudan, where massacres — particularly in El Fasher — drove an enormous spike in one-sided violence [3].

In Sudan, the war between the Sudanese Armed Forces and the Rapid Support Forces has produced the world's largest displacement crisis. Official counts from ACLED recorded over 28,700 fatalities by late 2024 [10], but independent estimates using satellite imagery and epidemiological modeling suggest the true toll may exceed 150,000 when accounting for starvation and disease [11]. A research team estimated at least 62,000 direct violent deaths as a conservative floor [12].

In Gaza, the Ministry of Health recorded over 75,800 deaths by May 2026 [13]. A Lancet-published population survey estimated 75,200 violent deaths and 8,540 excess non-violent deaths between October 2023 and January 2025 alone, with modeled estimates suggesting the total surpassed 100,000 by October 2025 [14].

Myanmar's civil war, now in its fifth year following the 2021 coup, saw at least 1,824 verified civilian deaths in 2024 — though the actual number is believed to be far higher, with over 6,486 total civilian deaths documented since the coup began [15]. Myanmar also recorded the world's highest landmine casualty rate in 2024 [16].

Would removing these outliers change the headline? The conflict count would still be historically high — the proliferation of smaller armed groups and intrastate conflicts across the Sahel, East Africa, and parts of South and Southeast Asia has been a steady trend since 2010. But the death toll would drop substantially. The 2018-2020 period, for comparison, saw 42,000 to 54,000 annual battle deaths with a similar number of active conflicts [4]. The current spike in lethality is driven by a small number of high-intensity wars layered on top of a genuine spread in the number of conflict theaters.

Regional Trends and Key Actors

Sub-Saharan Africa accounts for the largest share of active conflicts, with ongoing violence in Sudan, the Democratic Republic of Congo, Somalia, Nigeria's northeast, Ethiopia, Mozambique, and multiple Sahel states including Mali, Burkina Faso, and Niger [4]. The Middle East has seen the steepest escalation since 2023, driven by the Gaza war and its regional spillover into Lebanon, Syria, Yemen, and the Iran-Israel confrontation [1].

Europe, which recorded near-zero state-based conflict deaths for decades, re-entered the picture with Russia's full-scale invasion of Ukraine in 2022 [4]. Asia saw new interstate tensions flare between India and Pakistan and between Thailand and Cambodia in 2025 [1].

Several states are involved in multiple concurrent conflicts. Israel has been engaged in operations across Gaza, the West Bank, Lebanon, Syria, Yemen, and against Iran. The United States and United Kingdom conducted military operations against Houthi targets in Yemen [1]. Russia's involvement extends beyond Ukraine to military partnerships in several African conflicts through proxy forces.

The Arms Spending Spiral

Global military expenditure has risen every year for a decade, reaching $2.89 trillion in 2025 — up 37% in real terms since 2015 [7]. The 9.4% increase in 2024 was the steepest year-on-year rise since at least 1988 [17].

Source: SIPRI Military Expenditure Database

Data as of Jun 9, 2026CSV

Europe drove much of the acceleration, with a 17% regional spending increase in 2024 and a further 14% in 2025 [17][18]. Germany's military budget jumped 28% to $88.5 billion in 2024, making it the fourth-largest military spender globally [17]. Russia's expenditure reached an estimated $149 billion in 2024 — double its 2015 level — reflecting the cost of sustaining operations in Ukraine [17].

Does higher military spending deter conflict or fuel it? The evidence is mixed. Deterrence proponents argue that NATO's rearmament has prevented Russian escalation beyond Ukraine. Critics point out that the global spending surge has coincided with, not prevented, the highest conflict counts on record. A 2025 UN report on military expenditure and the Sustainable Development Goals noted that the resources diverted to arms budgets come at the direct expense of development, health, and climate adaptation — factors that themselves contribute to conflict risk [19].

The honest assessment is that both mechanisms operate simultaneously: deterrence can prevent specific escalations between major powers while the broader arms buildup contributes to a security environment where smaller conflicts receive less diplomatic attention and more weapons.

Why Now? Structural Drivers Behind the Surge

Conflict researchers point to several reinforcing factors:

Great-power competition. The return of direct strategic rivalry between the US, Russia, and China has fractured the UN Security Council's ability to authorize peacekeeping missions or enforce ceasefires. Veto threats from permanent members now routinely block action on active conflicts [20].

Collapse of peacekeeping capacity. UN peacekeeping troop deployments fell more than 40% over the past decade [21]. In 2025, only 58 multilateral peace operations were active in 34 countries, down from the previous year [20]. A funding shortfall of $2 billion — over 35% of the total peacekeeping budget — hit operations in July 2025 [20]. SIPRI warned in 2026 that peacekeeping was "in peril amid plummeting troop numbers and geopolitical deadlock" [22].

Proliferation of armed non-state actors. The number of non-state armed groups involved in conflicts has grown substantially, particularly across the Sahel and East Africa, where jihadist organizations, ethnic militias, and criminal networks operate across porous borders [4].

Climate stress. Research published in the Proceedings of the National Academy of Sciences found that climate variability has influenced between 3% and 20% of armed conflict risk over the past century [23]. A Stanford-led study found that a 1°C temperature rise increases conflict likelihood by 54% in areas where farmers and herders compete for resources [23]. However, researchers emphasize that climate acts as a "threat multiplier" rather than a direct cause, interacting with pre-existing governance failures, poverty, and ethnic tensions [24].

Erosion of arms-control frameworks. The collapse of major Cold War-era agreements — including the INF Treaty (terminated 2019), the Open Skies Treaty (US withdrawal 2020), and the effective suspension of New START inspections — has removed verification and restraint mechanisms that governed great-power military competition for decades [7].

The Counterargument: Is the Data Misleading?

There is a credible case that the "highest since WWII" framing, while technically accurate by conflict count, requires significant context.

Improved reporting inflates modern counts. The expansion of media, satellite imagery, and digital reporting since the 1990s means that low-level conflicts — particularly in remote areas — are far more likely to be captured in datasets today than they were during the Cold War. A conflict producing 30 deaths in rural Myanmar in 1965 would likely have gone unrecorded; today it would appear in both UCDP and ACLED [6].

Lower casualty thresholds capture more. UCDP's 25-death threshold for inclusion means that many of the 65 conflicts involve relatively small-scale violence. The jump from 32 conflicts in 2010 to 65 in 2025 partly reflects fragmentation — a single country's civil war splitting into multiple tracked dyads as new armed groups emerge — rather than entirely new theaters of war [4].

Per-capita deaths remain below Cold War peaks. While 245,000 battle deaths is the highest absolute number since 1994, the world population has grown from 5.6 billion in 1994 to over 8.2 billion today. On a per-capita basis, the current death rate from armed conflict remains below the peaks seen during the Korean War, the Vietnam War era, and the Iran-Iraq War of the 1980s [25]. The long-term decline in per-capita conflict deaths since 1945 has not been fully reversed, though the trend line has bent sharply upward since 2020.

Great-power peace persists. The most destructive wars in history — World War I, World War II, and the potential nuclear exchanges of the Cold War — involved direct combat between major powers. Despite the Ukraine war (which is a proxy conflict from NATO's perspective), no direct military engagement has occurred between nuclear-armed states. The "long peace" among great powers, while under greater strain than at any point since the Cuban Missile Crisis, has not broken [25].

These caveats do not negate the data. The count of active conflicts is genuinely at a post-1945 high. The absolute death toll is rising. Displacement is at record levels. But the framing matters: today's world is not more violent than the mid-20th century in per-capita terms, and the nature of contemporary conflict — fragmented, intrastate, often low-intensity — differs fundamentally from the total wars that defined the World War II era.

What Has Worked — and What Might

Historical examples suggest that specific interventions can reduce conflict duration and recurrence. The Dayton Agreement ended the Bosnian War in 1995 through sustained US-led diplomacy backed by economic incentives and arms embargoes [26]. The Camp David Accords brokered lasting peace between Egypt and Israel through extended mediation [26]. A 2019 UN analysis found that 75% of conflicts with mediator intervention saw reduced hostilities within six months [26].

More recently, Turkey and the UN brokered the Black Sea grain deal in 2022, demonstrating that narrow, interest-based agreements can succeed even amid broader hostilities [26]. Regional actors in the Global South — Qatar, the UAE, Kenya, South Africa — have taken on greater mediation roles as US and European diplomatic bandwidth has been consumed by Ukraine and the Middle East [27].

But the realistic policy window is narrow. Security Council paralysis means the UN cannot authorize new major peacekeeping operations. The US retreat from multilateral engagement under the current administration has left a mediation vacuum that regional organizations lack the capacity to fill [20]. Arms-control negotiations between the US and Russia have stalled. And the conflicts driving the current surge — Ukraine, Sudan, Gaza, Myanmar — each face specific political obstacles to negotiated settlement that no amount of institutional reform can bypass in the short term.

The most achievable near-term interventions, according to conflict researchers, include restoring peacekeeping funding to prevent the collapse of existing missions, investing in early-warning systems for emerging conflicts in climate-vulnerable regions, and maintaining diplomatic channels for ceasefire negotiations even where comprehensive peace is not yet possible [20][22]. None of these are sufficient on their own. All of them are at risk.

The Trajectory

The data is clear on the trend: more conflicts, more deaths, more displaced people, more military spending, and less multilateral capacity to manage any of it. Whether this represents a temporary spike driven by a few catastrophic wars or a structural shift toward a more violent international order depends on variables — great-power relations, the fate of the UN system, climate trajectories — that remain genuinely uncertain.

What is not uncertain is the cost. At 123 million displaced people, 245,000 battle deaths in a single year, and $2.9 trillion spent on arms, the price of the current moment is being paid overwhelmingly by civilians in countries that had little say in the geopolitical dynamics driving their wars.