Battleground — Chris Ryan

Fourteen-year-old Ben Tracy goes to Pakistan with his environmental-activist mother, who then travels across the border into Afghanistan, leaving Ben behind, where it's safe. But Ben and his new friend, Aarya, are kidnapped and find themselves caught up in a terrifying planned Taliban attack that could destroy Southern Afghanistan killing thousands. And when Ben sees their kidnappers are carrying some sort of weapon that looks like a suitcase, he realizes that their lives are in serious danger.