Scarecrow And The Army of Thieves: Matthew Reilly

Shane Schofield 5. At an abandoned Soviet base in the Arctic, the battle to save the world has begun...
The secret base: It is a top-secret base known only as Dragon Island. A long-forgotten relic of the Cold War, it houses a weapon of terrible destructive force, a weapon that has just been re-activated.
A renegade army: When Dragon Island is seized by a brutal terrorist force calling itself the Army of Thieves, the fate of the world hangs in the balance, and there are no crack units close enough to get there in time to stop the Army setting off the weapon.
One small team: Except, that is, for a small equipment-testing team up in the Arctic led by a Marine captain named Schofield, call-sign Scarecrow....At an abandoned Soviet base in the Arctic, the battle to save the world has begun. It's not a strike force; just a handful of Marines and civilians. It's not equipped to attack a fortified island held by a vicious army. But Scarecrow will lead the team in anyway, because someone has to. The ultimate hero is back, facing the ultimate army of villains.