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Global State-Based Conflicts Hit Post‑WWII Peak in 2025, UCDP/PRIO Data Show

Researchers say the rise in interstate wars and mass attacks on civilians is overwhelming aid systems and revealing weakened multilateral crisis management.

Overview

  • Uppsala Conflict Data Program figures published by PRIO on Tuesday show 65 conflicts involving at least one state in 2025, the highest count since records began in 1946.
  • Interstate wars doubled to eight in 2025, a sharp reversal of a long post‑World War II trend and including clashes such as RussiaUkraine, IranIsrael, IndiaPakistan, and other border fights.
  • Battle-related deaths reached roughly 244,000–245,000, with the RussiaUkraine war accounting for about 62 percent of those fatalities and one-sided killings of civilians jumping to about 76,500 largely after the El Fasher massacres in Sudan.
  • Conflicts grew more international and complex, with roughly 35 countries involved and many states fighting on multiple fronts, a pattern that has intensified displacement and restricted humanitarian access.
  • PRIO and UCDP analysts link the surge to rising geopolitical polarization and weakened institutions such as the UN Security Council, a dynamic that could lock in a higher baseline of violent, hard-to-manage wars and deepen humanitarian crises.