The Killing of Iran’s Supreme Leader and the End of an Era in the Middle East

What It Covers

NYT correspondents Mark Mazzetti and David Sanger analyze the overnight US-Israeli joint military assault on Iran on March 1, 2026, which killed Supreme Leader Khamenei and targeted nuclear sites, missile facilities, and government buildings, triggering immediate Iranian retaliatory strikes across the Middle East and raising questions about regime survival and regional stability.

Key Questions Answered

• •Justification Gap: The Trump administration's stated rationales for war did not withstand scrutiny. The Defense Intelligence Agency concluded Iran is roughly a decade away from long-range ballistic missiles capable of hitting the US, and damage from June 2025 strikes already set back Iran's nuclear program far beyond the "one week" timeline advisor Steve Witkoff publicly claimed.
• •Succession Depth: Khamenei reportedly prepared a succession plan extending four levels deep, anticipating leadership losses. The regime's Islamic Revolutionary Guard Corps retains control of internal security and demonstrated capacity to suppress mass protests as recently as January 2026, meaning institutional collapse is not guaranteed even after decapitation strikes remove top figures.
• •Iran's Missile Reserve: Iran entered the conflict with approximately 2,000 ballistic missiles and deployed only a fraction in its initial retaliatory strikes against US bases in Bahrain, Dubai, and Israel. Analysts assess Iran may be deliberately rationing its arsenal to preserve deterrence capability against anticipated second and third waves of US-Israeli strikes.
• •Airpower Regime Change Limit: No modern historical precedent exists for achieving controlled regime change through airpower alone without ground troops. Trump explicitly rules out deploying ground forces, meaning the US has limited ability to shape post-regime outcomes. The Iraq and Afghanistan precedents demonstrate that even boots-on-the-ground presence failed to prevent power vacuums and civil conflict.
• •Asymmetric Retaliation Risk: Even if Iran's conventional missile capability is degraded, residual regime elements retain capacity for long-duration asymmetric responses including terrorist attacks in Europe and the US homeland, plus cyber operations. Iran ranks below China and Russia in cyber capability but operates at the next tier, with demonstrated ability to conduct disruptive digital attacks against Western targets.