Sirens sounded in Israel as Iran launched dozens of ballistic missiles in retaliation for Israel's strikes on its nuclear facilities.

The State Department ordered nonessential staff and their families to leave the U.S. Embassy in Baghdad as tensions with Iran over nuclear talks escalate. This comes as sources tell CBS News that Israel plans to launch an operation against Iran.

Israel and Iran threaten to step up their military confrontation, nearly 48 hours after the Israeli strikes began. Newshour analyses Israel's strategy and assesses how close Iran was to making a nuclear weapon.

The State Department told regional allies about Israel's plan to strike Iran, and indicated it wasn't a U.S. operation, four sources told CBS News.

Israel’s defense minister warned Saturday that “Tehran will burn” if Iran continues firing missiles on Israel after at least three people died and dozens were wounded Saturday morning, following a series of blistering Israeli attacks on the heart of Iran’s nuclear program and its armed forces.

Israel accuses Iran of seeking to build a nuclear bomb—a mission now intolerably close to fruition—and of genocidal intentions against it. The IDF said it has destroyed 120 of Iran's missile launchers—one-third of the total number—since the start of its Operation Rising Lion.