Footage said to have been published as part of a vlog in 2011, shows Trump predicting that Obama would start a war with Iran in order to get re-elected.
The footage has been circulating around social media, since top Iranian general Soleimani was killed by US forces.
In the clip Trump says; "Our president will start a war with Iran, because he has absolutely no ability to negotiate. He's weak and he's ineffective, so the only way he figures that he's going to get re-elected, and as sure as you're sitting there, is to start a war with Iran...
"To start a war in order to get re-elected, and I believe that is going to happen, would be an outrage." Trump says.