Khamenei posted three consecutive messages in Persian, English and Hebrew on social network X, warning Israel of strong action against Tel Aviv. "We must give a strong response to the terrorist Zionist regime. We will show the Zionists no mercy," he said on X.

The spokesman for Iran's Islamic Revolutionary Guard Corps (IRGC), Colonel Iman Tajik, declared that Iran has taken complete control over Israel's skies and airspace.

The Israel Defense Forces (IDF) on Wednesday announced its air defense system had shot down several Iranian missiles and drones, adding that it had launched consecutive raids last night and this morning deep into Iranian territory, including a centrifuge manufacturing facility and a missile manufacturing plant in Tehran.

Israel's airstrikes on Iran over the past six days have killed 585 people and injured more than 1,300, a human rights organization based in Washington, USA, said Wednesday.