Plot for THE EXPENDABLES 3 Revealed?

The Expendables 3 is coming and some possible plot details for the film have leaked out online. Not that the movie really needs a plot, it's just a big action movie franchise about good guys fighting bad guys. I guess there has to be a reason for the fight in the first place, and this time it's all about saving the President of the United States. They also reiterate that Jackie Chan is in the film and Jet Li will be returning.

The news comes from and this is the update they have:

It's no surprise that the kung fu legend Jackie Chan is slated to join the growing cast of action superstars for Expendables 3. Chan is to play a former team member that aids Stallone and his crew in saving the president.
Jet Li is also to return; this would be the second time the kung fu movie legends have worked together. And for any action-junky, this will make the popular franchise even more exciting.
Another kung fu movie great, Donnie Yuen was also believed to be attached to the film. But word has it that he backed out of the project.
Still the list of old school action heroes continues to grow with names like Wesley Snipes and Steven Seagal. This could be the biggest collection of action heroes ever in one movie.

I'm sure it will be just as fun as the first two movies. Lionsgate plans to release the film on August 15th, 2014. It will be directed by Patrick Hughes and will also star Sylvester Stallone, Arnold Schwarzenegger and might also include Nicolas Cage, and Milla Jovovich, who are also in advanced negotiations.

The other cast members of the previous film included Jason Statham, Dolph Lundgren, Chuck Norris, Nan Yu, Randy Couture, Terry Crews, Liam Hemsworth, Jean-Claude Van Damme, and Bruce Willis.