Washington: Arnold Schwarzenegger has never hesitated to call in backup.

In Terminator 2, the Arnold got an assist from the plucky, potty-mouthed kid who played John Connor as he tried to stave off the end of the world.

French President Emmanuel Macron, left, with Arnold Schwarzenegger at the Elysee Palace in Paris. Credit:AP

In 1987, to take on the Predator, Schwarzenegger joined forces with Carl Weathers - and Weathers' biceps, during the most testosterone-laden movie handshake ever recorded.

But now Schwarzenegger's nemesis is a billionaire who commands America's military and has round-the-clock access to nuclear weapons.