A U.S.- and Israel-led campaign against Iran escalated into a regional war, killing over 2,000 and displacing 700,000 across 16 countries.

A U.S.- and Israel-led military campaign against Iran, beginning February 28, 2026, has escalated into a regional conflict affecting 16 countries, severely disrupting health systems. The WHO reports over 1,300 deaths and 9,000 injuries in Iran, at least 570 deaths and 1,400 injuries in Lebanon, and 15 deaths and 2,142 injuries in Israel. At least 43 health facilities in Iran and 49 in Lebanon have been attacked or closed, with over 700,000 displaced, many in overcrowded shelters with poor sanitation. Medical supply chains are hampered by airspace restrictions and a depleted WHO contingency fund, delaying aid for over 1.5 million people across 25 countries. The UN Security Council passed Resolution 2817 condemning Iran’s attacks, while global powers struggle to contain the crisis amid growing regional instability and humanitarian shortages.