Florida, Dec. 29 -- US President Donald Trump on Monday warned that the United States would carry out another military strike against Iran if it attempts to rebuild its ballistic missile or nuclear programme.

Speaking to reporters alongside Israeli Prime Minister Benjamin Netanyahu at his Mar-a-Lago club in Florida, Trump said Washington was closely watching Tehran's actions.

"I hear that Iran is trying to build up again, and if they are, we're going to have to knock them down," Trump said. "We'll knock them down. We'll knock the hell out of them."

When asked whether the US would support an Israeli strike targeting Iran's missile programme, Trump said he would support an attack on Iran "immediately" if it tries to redevelop its nuclear...