Pakistani fertilizer ignites tensions with U.S.

MULTAN, Pakistan (Reuters) - Whenever a homemade bomb kills a U.S. soldier in Afghanistan, the chances are its main ingredient came from a factory in Pakistan, a trend that has emerged as the latest source of friction in already frayed U.S.-Pakistan relations. A U.S. Congressional panel has frozen $700 million in aid to Pakistan until it gives assurances it is helping fight the spread of bombs ...