An accidental nuclear explosion in India and Pakistan could spark a nuclear war, warns a new report, "Reducing Nuclear Dangers in South Asia," released by the Henry L. Stimson Center today. Both countries lack basic confidence-building controls that could reduce the risk of an accidental detonation or missile launch sparking nuclear war, the report asserts. Without those controls, "professions of innocence might not be believable," it states. Leaders of the two countries need to signal their intent to talk "in...