 Israel launched missiles in a retaliatory strike against Iran, a senior U.S. official told ABC News the missile launches follow Iran's attack last Saturday, where the country sent a volley of more than 300 uncrewed drones and missiles toward targets throughout the country, Israeli military officials previously said. All but a few were intercepted by Israel and its allies, including the United States, officials said.A senior Israeli official told The Washington Post the attack was intended to signal to Iran that Israel can attack its territory, the Iranian state-run Erna news agency said air defense batteries fired across several provinces. It didn't elaborate on why the batteries fired, though people across the area reported hearing the sounds. The semi-official Fars and Tasneem news agencies also reported the sound of blasts, without giving a cause. State television acknowledged loud noise in the area, explosions have been reported near major airbases in Isfahan, central Iran. Isfahan is also home to sites associated with Iran's nuclear program, including its underground Natanz enrichment site, which has been repeatedly targeted by suspected Israeli attacks.3 Iranian officials told The New York Times the attack on the airbase included small drones that may have been launched from inside Iran, saying radar systems didn't detect unidentified aircraft that entered Iran's airspace. The International Atomic Energy Agency says there is no damage to Iran's nuclear sites. The UN agency said it will continue to monitor the situation very closely. An Iranian arms control expert says the reported attack was far more limited than many expected. In an interview with Al Jazeera, Ali Amadi said Israel has much more limitations in its operational range than many think. Certainly, after Iran's retaliatory capacity was criticized, it benefits from advertising how ineffective what Israel did was as well. Iran also needs to prepare the public for a much softer reaction than it has talked about in the last couple of days, he pointed out.