Washington recently announced that it would send troops to Saudi Arabia for defensive purposes. The move came after drone attacks on Saudi Aramco oil fields. The incident was claimed by Yemen's Houthis, but the US blamed it on Iran. Tehran has strongly rejected the accusations.

Axar.az reports citing IRNA that any country that attacks Iran will be the "main battlefield", the head of the Islamic Revolutionary Guard Corps, Major General Hossein Salami, said.

"Be careful, a limited aggression will not remain limited. We are after punishment and we will continue until the full destruction of any aggressor," Salami said in remarks broadcast on state TV on Saturday.
He also reiterated Iranian President Hassan Rouhani's warning that the Iranian military would down all drones violating the country's airspace.

US President Donald Trump said he expected sanctions to "work" on Iran, adding that he preferred this strategy to one involving military action.

"I think the sanctions work," Trump said during a joint press conference with Australian Prime Minister Scott Morrison. "The military would work. That's a very severe form of winning."