DONALD Trump has made a powerful enemy of Arnold Schwarzenegger, and the Terminator star isn’t holding back.

When news.com.au sat down with Schwarzenegger and asked him about Trump’s Muslim travel ban, he fired up.

“I want to reiterate to you that one man does not have the power,” he said.

“We do not have a dictatorship, we have a democracy and our Constitution has been written so well that it is [bulletproof]. We’ve gone through Watergate and all the different trouble, and America has always come out well.

“This is a little hiccup for America and it will work its way through it. You will see the reaction and the way it’s all going to unravel.”

But the travel ban isn’t Trump’s only mistake, according to Schwarzenegger. Last week he released a video attacking President Trump’s withdrawal from the Paris Agreement, saying “one man cannot stop our clean energy revolution” or “destroy our progress”.

“Please Mr President, choose the future,” he begged. “No one remembers the people who told President Kennedy not to go to the moon. We remember the great leaders.”

And we can expect to see more impassioned videos from Schwarzenegger.

“All I know is, when I see him going in the wrong direction, like he’s done, we will go on the attack, we will go on social media and speak up,” he told news.com.au.

“I mean that with no hostility. I don’t believe everyone has to agree with everything I say.”

Dwayne “The Rock” Johnson has recently made noises about running for the top job in Washington, a move Schwarzenegger approves of. “I’m very happy he thinks about that. I’ve paved the way [for him], the way before me [President] Ronald Reagan paved the way, and [Senator] John Glenn, who was an astronaut, paved the way, and [Senator] Bill Bradley, who was a basketball player, paved the way.

“Politicians don’t like that because they feel they should have a lock on politics. So when someone comes from the outside, they get a little bit shaken up.

“One thing I can tell you is that [Dwayne] is a very smart guy. He’s a very charming guy, he’s a great athlete, and he has great will and a great vision. He has gone so far with his career and has always gone to the next level, and the next level, and the next level. So anything is possible.”

The 69-year-old movie star and politician was at the Cannes Film Festival this year promoting his environmental documentary, Wonders of the Sea 3D.

Schwarzenegger narrated the underwater documentary, directed by explorer and environmentalist, Jean-Michel Cousteau.

As for his apparent love of the ocean, he says, “I grew up in a very small village in Austria, with a population of 800 people. I never saw the ocean growing up, but as a kid I’d hoped that one day I’d see it.” He smiled.

“The first time I saw it was when I took my first plane. I was 19 years old and I was going to the Mr Universe contest in London. I looked down and I saw the water.

“Now I live in Southern California and Southern California has the most pristine and most beautiful coast line. So I want to help protect that.”

The former Mr Universe and seven-time Mr. Olympia will celebrate a milestone birthday this year. “Ah, you can call me 70 already. I believe in rounding up,” he laughed.

“I am well past the halfway point but I feel the same way as I did 40 years ago. [My life] has been a fantastic ride. I had a lot of goals when I was a kid and I accomplished them, as well as a lot of unexpected goals, like the governorship and my children — a lot of stuff in my life has been a total surprise and joy.

“I’ve had a lot of fun.”