Andy Garcia got so into character playing the Georgian president in new drama 5 Days Of War that he ended up answering the leader of the country's special hotline.
The film, based on the Russia-Georgia conflict which turned into the 2008 South Ossetia war, was filmed on location in Georgian President Mikheil Saakashvili's actual residence.
Director Renny Harlin, revealed: "It was pretty amazing - Andy Garcia plays the president (Saakashvili) and he was actually sitting at the real desk of the real president and we were shooting one scene and all of a sudden the red phone, the special phone (rang), and he just went 'hello I'm busy right now, not now'.
"So we'll never know who was calling but maybe we changed the whole world's history!"
Andy revealed filming in the president's palace helped him get into character.
He said: "It was interesting to be in the actual place where the president went through it of course that was a privilege.
"He was there but he wasn't watching. He was in the country. He had more important things to be dealing with."
The film also stars Dean Cain as a US press officer and Rupert Friend and Coupling star Richard Coyle as journalists.
::5 Days Of War is released on DVD and Blu-ray on June 13.