Why are the U.S. and Israel striking Iran?
What unfolded and why it matters
A week into an unprecedented campaign, U.S. and Israeli forces have mounted a series of coordinated strikes against targets across Iran and in neighboring theatres. The operations have included airstrikes on Tehran and other Iranian cities, strikes that left damage to hospitals, schools and other civilian infrastructure, and a U.S. submarine attack that sank an Iranian warship. Investigations and forensic analysis by multiple outlets and officials indicate U.S. forces were likely responsible for at least one of the strikes that killed scores of children at a school, prompting calls for an independent inquiry.
Leaders in Washington frame the campaign as a direct response to Iran’s actions and to degrade the regime’s ability to threaten U.S. forces and allies. President Trump has publicly signaled a maximal goal—demanding an "unconditional surrender"—and the White House has described the operations as lasting several weeks. Tehran has retaliated with missile and drone strikes that struck at U.S. partner infrastructure and regional hubs, escalating the conflict beyond isolated attacks.
Key consequences for the United States and the world
- Energy and markets: Oil prices and global markets reacted sharply, with crude spiking and stock indexes falling as traders priced in supply risks. Airlines and shippers have altered routes and some countries closed airspace.
- Military risk: U.S. forces in the region face new targeting threats; U.S. officials say foreign intelligence, including from Russia, has helped Iran identify U.S. positions, raising force-protection concerns.
- Humanitarian and diplomatic fallout: Civilian casualties, mass displacements inside Lebanon and elsewhere, and mounting international pressure are prompting calls for independent investigations and increased humanitarian assistance.
The campaign has broad strategic and political implications: it reshapes U.S. alliances, pressures energy markets, raises the risk of regional escalation, and is fueling intense domestic debate over the wisdom and legality of the strikes.