UPDATE: Stalone's rep told Rolling Stone that the below is not true.
"We have teams scouting Iraq and parts of Syria where Isis have their greatest strongholds," Stallone said at Comic-Con.
"We're working with the locals there to help deliver the most intense and realistic Rambo movie experience ever."
According to The Independent, this is a shift from the last plot he described, which had John Rambo tackling a Mexican drug cartel.