According to Cohen and Frankel, nuclear ambiguity can be explained in two senses; first, it means that there is a genuine uncertainty, that is, lack of sufficient knowledge as to the technical nuclear status of the country under study; in the second sense, it refers to an ambivalence political, military or even cultural in origin on the part of the suspect country's leadership concerning nuclear weapons. India and Pakistan are two typical cases of horizontal nuclear weapons proliferation and their nuclear tests marked the actual beginning of the second nuclear age. The Kargil conflict erupted in early spring, 1999, when about 800 Pakistani regular and irregular forces took control of hilltops inside the Indian area of the Line of Control. Although nuclear weapons states prepare elaborate nuclear use plans in their nuclear doctrines, in reality they do not prioritise their employment in order to win battles.