US President Donald Trump said the deal with Iran is not final.

He made this statement during a meeting with Egyptian President Abdul Fattah al-Sisi this Wednesday.

"If I don't like it, we're going to go back and shoot them, dropping bombs on their heads... if they don't behave, we're going to go back and drop bombs right on their heads, okay?" Trump declared.

Among other things, Trump said that the US is not investing in Iran.

This comes after reports that the US was willing to allow an investment fund for Iran in exchange for Tehran agreeing to a final settlement.

The agreement is expected to be officially signed on Friday in Switzerland.