Israel's sweeping attack across Iran struck at the heart of Tehran's nuclear program, delivering a blow to the country's ability to enrich uranium and potentially setting its nuclear ambitions back by months or years.

Iran has launched retaliatory missile strikes on Israel into Saturday morning after a series of blistering Israeli attacks on the heart of Iran's nuclear program and its armed forces, killing at least two people and wounding others.

Israel badly damaged one of Iran’s key nuclear sites and killed a startling array of top military and nuclear officials in the attacks that started on Friday morning. But when the sun rose after that devastating assault, it was also clear how much of Iran’s nuclear program remained, at least for now.