Now there is the additional danger of a thermonuclear "exchange". Pakistan is a much smaller country than India and is vastly inferior in terms of tanks, infantry, aircraft, ships and submarines. It also has, geographically, a narrow "waist". The Indian General Staff could in theory punch right across the border and through the middle of Pakistan, bisecting the country and cutting off its capital, Islamabad, from Karachi and the sea. The only Pakistani response to this nightmare would be to detect the massing of Indian forces early enough, and then to hit them with a pre-emptive nuclear strike - perhaps retaining enough warheads to deter an Indian response in kind, and perhaps not. The nearcatastrophic drama that took place under the Clinton administration arose from precisely such a crisis - except that the Pakistani side had mistaken Indian intentions.