The war is one of the most recent examples of high-altitude warfare in mountainous terrain , which posed significant logistical problems for the combating sides . It is also one of the very few instances of direct , conventional warfare between nuclear states ( i.e. , those possessing nuclear weapons ) . India had conducted its first successful test in 1974 ; Pakistan , which had been developing its nuclear capability in secret since around the same time , conducted its first known tests in 1998 , just two weeks after a second series of tests by India
second series of tests
Pokhran-II
Kargil War