Israel’s attack on Iran likely damaged a base run by the paramilitary Revolutionary Guard that builds ballistic missiles and launches rockets as part of its own space program.

An Israeli attack on Iran damaged facilities at a secretive military base southeast of the Iranian capital that experts in the past have linked to Tehran’s onetime nuclear weapons program and at another base tied to its ballistic missile program.

Iran previously played down Israel's air attack on Saturday, saying it caused only limited damage, while U.S. President Joe Biden called for a halt to escalation that has raised fears of an all-out conflagration in the Middle East.

Iran's Foreign Ministry is vowing it will "use all available tools" to respond to Israeli airstrikes targeting the country over the weekend.

Israel's airstrikes "hit hard" Iran's defences and missile production, Prime Minister Benjamin Netanyahu said on Sunday, as Iranian Supreme Leader Ayatollah Ali Khamenei said the country was considering its response.