Undoubtedly, for nearly two decades, the most dangerous place on Earth has been the Indian-Pakistani border in Kashmir. It’s possible that a small spark from artillery and rocket exchanges across that border might -- given the known military doctrines of the two nuclear-armed neighbors -- lead inexorably to an all-out nuclear conflagration. In that case the result would be catastrophic. Besides causing the deaths of millions of Indians and Pakistanis, such a war might bring on “nuclear winter” on a planetary scale, leading to levels of suffering and death that would be beyond our comprehension.