
This timeline tracks the rapid escalation of military conflict between the United States, Israel, and Iran following the death of Supreme Leader Ayatollah Ali Khamenei on February 28, 2026. The developing crisis reveals internal Iranian leadership divisions, growing US-Israel strategic differences, and an expanding regional war with global economic consequences.
13 events · 8 days · 21 source articles
A US-Israeli airstrike killed Supreme Leader Ayatollah Ali Khamenei, triggering the war. Iran's de facto leader Ali Larijani vowed to hold President Trump responsible for the killing. This marked the beginning of intense military exchanges between Iran and the US-Israeli coalition.
Speaking aboard Air Force One, President Trump said he was not interested in negotiating with Iran and raised the possibility of killing all potential Iranian leaders and destroying the military. He stated that at some point there may be nobody left to surrender. This marked a significant escalation in US war aims.
Ali Larijani, Iran's top national security official, appeared on national television vowing that Tehran would not surrender or cease retaliatory strikes. Israeli and Iranian forces traded numerous attacks throughout the day. The war had already killed at least 1,332 Iranian civilians.
President Masoud Pezeshkian issued an unprecedented public apology for Iranian missile and drone attacks on regional countries, even as strikes continued. This revealed a significant split in Iran's tripartite leadership council, with the political leadership unable to control the Revolutionary Guard's military actions.
Within hours of President Pezeshkian's apology, Iran launched attacks on the US Navy's 5th Fleet stationed in Bahrain. This contradiction highlighted the Revolutionary Guard's independence from civilian leadership and the chaotic command structure following Khamenei's death.
The US and Israel launched devastating new strikes on Tehran, engulfing the capital in enormous flames. Vast pillars of fire towered above the city, shrouding the skyline in smoke. The IDF confirmed targeting several sites as the conflict intensified into its second week.
President Trump told the Times of Israel that ending the war would be a mutual decision with Israeli Prime Minister Netanyahu, though Washington would make the final call. This indicated coordination challenges and potential divergence between the allies on war objectives.
Ten days into the war, a public divergence emerged between the US and Israel. With oil prices spiking and historically low American support for the offensive, Trump told CBS News the war was 'pretty much over,' contradicting earlier vows for weeks or months of attacks. US officials expressed unease after apocalyptic scenes in Tehran.
Ali Larijani responded to Trump's threats regarding Iran's blockage of oil trade through the Strait of Hormuz, stating Iran was not afraid of Trump's threats. The strategic chokepoint became a key battleground affecting global energy markets.
The United States carried out what Trump called 'the most powerful bombing raid' in the Middle East, targeting Iran's Kharg Island oil export facility. This marked a significant escalation targeting critical energy infrastructure rather than purely military sites.
President Trump told NBC News the US had 'totally demolished' much of Kharg Island and threatened to hit it 'a few more times just for fun.' This marked a sharp escalation from earlier claims of targeting only military sites and dealt a blow to diplomatic efforts. Middle Eastern allies' attempts to open talks were brushed aside.
As the war entered its third week, Trump urged allies to deploy warships to secure the Strait of Hormuz, a critical artery for global energy supplies. Iran's Revolutionary Guards vowed to intensify their response. The conflict had shut off the vital strait, causing chaos in global energy markets.
Israeli army spokesman Effie Defrin announced plans for at least three more weeks of strikes through the Jewish holiday of Passover, with thousands of targets remaining. The Israeli air force had already carried out more than 400 waves of strikes. US Energy Secretary Chris Wright predicted the war would end within 'the next few weeks.'