The actors have teamed up with anti-nuclear organisation Global Zero to pledge their support for Obama's long-awaited deal with Iran, which aims to prevent the Middle Eastern country from developing nuclear weapons.

It needs to be passed through Congress in September (15) and the stars have appeared in a video asking the U.S. public to put pressure on politicians to vote in favour of the deal.

Freeman says, "The agreement currently on the table is the best way to insure (sic) that Iran doesn't build a f**king bomb... and the alternative to (diplomacy) is war... and s**t, we've got a deal on the table that keeps us all safe."

Lyonne adds, "Do me a favour, OK, don't let some hot-headed member of Congress screw that up", and Black says, "Playing politics with our national security is actually not all that funny".