The island that you fight on and across in Operation Flashpoint 2 exists. It's a real place, called Sakhalin - modelled, mapped and recreated to the developers' best ability.
The same hyper-realistic approach worked wonders for the original Operation Flashpoint: the islands of Everon, Kolgugev and Malden were based on Krk (Croatian), Tenerife (Mediterranean) and Lefkas (Greek) respectively. Those rolling landscapes gave it an unusual authenticity.
It's that spirit that enlivens Flashpoint 2: everything is being modelled in hyper-detail, an almost pixel-perfect rehearsal for a war that could happen.