International

For the first time in decades, Iranians woke to a country without Ayatollah Ali Khamenei as supreme leader, following his death in coordinated US-Israeli strikes. The nation now confronts a period of deep uncertainty.Diverse reactions unfolding nationwideThe news of Khamenei’s death has triggered a broad array of reactions throughout Iran, where residents in the capital and other major cities voiced restrained optimism, seeing the conclusion of his decades-long leadership as a moment that might reshape the country’s future. In several districts, impromptu celebrations broke out as crowds honked car horns, waved garments, and even pulled down monuments linked to the…

Modern nuclear power relies on a multilayered framework of technical, organizational, regulatory, and institutional protections built to avert accidents, curb their impact when they happen, guard against hostile interference, and ensure nuclear materials are not redirected for weaponization. These protective measures extend throughout the entire life span of a plant, covering site selection, system design, construction, daily operations, emergency preparedness, waste handling, and eventual decommissioning.Core principles: defense-in-depth and multiple physical barriersDefense-in-depth is the organizing principle. It implements multiple, independent lines of protection so that no single failure or human error leads to catastrophic release. Complementing this are multiple physical barriers…

Rivers cross political borders more than any modern idea of territory can contain. More than 150 countries share transboundary river basins, and well over 260 international river and lake basins drain across political boundaries. When water is scarce or unevenly distributed, competition can escalate into political tension or even military posturing. Conversely, well-designed shared river agreements act as instruments of cooperation, turning a potential flashpoint into a platform for stable, mutually beneficial management. This article explains how and why these agreements prevent conflict, with examples, data, and practical lessons.Primary hazards linked to unregulated transboundary riversUncoordinated use of a shared river…

Cities around the world face more frequent, longer and hotter heat waves as climate change continues to raise average temperatures and amplify extremes. Urban areas are especially vulnerable because the urban heat island effect concentrates heat: paved surfaces, dense buildings and low vegetation can raise local temperatures by 1–7°C relative to nearby rural areas. Preparing for this new normal requires a mix of near-term emergency measures, longer-term planning, infrastructure upgrades, public health interventions and community-focused equity work.The challenge: understanding why severe heat waves are becoming a rising threat to urban areasHeat waves heighten the likelihood of heat‑related illness, cardiovascular and…

A war or political clash occurring far from home can push up the cost of everyday items through a cascading mix of economic and logistical pressures. Today’s supply networks are deeply interconnected, and vital inputs like energy, metals, food, and shipping capacity tend to be concentrated in a few key producing areas. When turmoil interrupts production, trade routes, insurance services, or financial operations in those locations, input costs rise, and producers ultimately transfer those higher expenses to consumers.Key transmission channelsCommodity supply shocks — Conflicts that disrupt the export flow of oil, gas, wheat, fertilizers, or metals cut global availability and…

Freshwater underpins life, agriculture, energy production, industry, and vital ecosystem functions, yet its availability remains both scarce and uneven across the globe. Only around 2.5% of Earth’s water is freshwater, and just about 0.3% of the planet’s total water supply is easily accessible on the surface for human use. Meanwhile, expanding populations, accelerating urbanization, shifting dietary patterns, and ongoing economic growth continue to push demand upward. At the same time, climate change, retreating glaciers, declining groundwater reserves, pollution, and aging infrastructure are undermining the reliability of supply. Together, these pressures push water beyond a local management concern, turning it into…

Energy extends far beyond fuel and electricity, serving as the foundation for industry, transportation, household well-being, and military strength. Because of this central role, it becomes a particularly powerful instrument in international affairs. Governments, corporations, and nonstate actors leverage supply, pricing, infrastructure, regulation, and technological oversight to pursue strategic objectives. This behavior endures due to four persistent factors: the uneven global distribution of resources, the long lifespan of infrastructure and contractual arrangements, the rapid economic strain caused by supply disruptions, and the wide-ranging ripple effects on alliances and domestic political dynamics.Fundamental dynamics shaping energy geopoliticsSupply manipulation: producers can cut or…

The presence of U.S. Immigration and Customs Enforcement (ICE) personnel in Italy ahead of the upcoming Winter Olympics is raising heightened concern among both lawmakers and the wider public, as debates intensify over jurisdictional authority, security methods, and previous incidents reported in the U.S.The Italian government is confronting increasing scrutiny after reports emerged that ICE officers will provide security support during the Milan-Cortina Winter Olympics. The announcement has reignited discussions about the role of foreign law enforcement agencies on Italian soil, particularly given recent violent incidents linked to ICE operations in the United States.The U.S. Department of Homeland Security (DHS)…

Democratic stability depends on citizens who remain well-informed, institutions capable of earning public trust, a shared foundation of widely acknowledged yet continuously debated facts, and transitions of power conducted with order. Information manipulation — the deliberate shaping, distorting, amplifying, or suppressing of material to influence public attitudes or behavior — gradually erodes these foundations. It weakens them not only by spreading falsehoods, but also by reshaping incentives, corroding trust, and transforming public attention into a lever for strategic gain. This threat functions at a systemic level, producing compromised elections, polarized societies, reduced accountability, and environments in which violence and authoritarian…

Venezuelan opposition leader and 2025 Nobel Peace Prize laureate Maria Corina Machado arrives in Washington amid tense negotiations over her country’s future. Her visit coincides with U.S. debates over Venezuela’s leadership following Nicolás Maduro’s removal from power.Machado’s arrival in the U.S. capital follows a volatile year in Venezuelan politics, marked by shifting power and uncertainty. Only a year earlier, she had been on the campaign trail in Caracas, working to rally citizens against Maduro as he entered a third term despite disputed election outcomes. Although her candidate, Edmundo González, was widely reported to have secured a clear victory, Maduro’s administration…