Iran caused at least $5 billion in damage to US military bases: WSJ A Wall Street Journal investigation found Iranian strikes damaged 274 structures at 24 US installations during the first six months of the war, with costs estimated at between $5 billion and $15 billion. Iran increasingly focused on housing troops and showed improved accuracy and sequence of attacks. AP reported on attacks that targeted early warning systems before hitting planes and buildings. More than 20 American service members died and 400 were injured before the cease-fire collapsed in July, after which casualty figures ceased to be published.