As a child studying in a madrasa in Afghanistan, Mohammad Khalid Tahir dreamed of waging jihad. By the time he was a teenager, he had joined the Taliban and celebrated when they seized power from the U.S.-backed government two years ago. So this spring, he did — but across the border in Pakistan. “Our only expectation is to be martyred,” Mr. Tahir says in a video of him en route to Pakistan that was viewed by The New York Times. As a generation of fighters raised in war now finds itself stuck in a country at peace, hundredsof young Taliban soldiers have crossed illegally into Pakistan to battle alongside an insurgent group, according to Taliban members, local leaders and security analysts.

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Persons: Mohammad Khalid Tahir, ” Mr, Tahir, hundredsof Organizations: “, The New York Times Locations: Afghanistan, U.S, Pakistan