Lower-yield versions or miniaturised nuclear weapons can be used to inflict damage on strategic military deployments of the enemy. Hence, TNWs are often referred to as battlefield nuclear weapons or baby nukes. Since the damage is localised or confined to a certain area, the danger of impacting on the civilian population is greatly reduced as compared to a strategic nuclear weapon of the Hiroshima kind.
The TNWs include a broad range of atomic explosive devices like nuclear artillery shells, nuclear landmines and nuclear warheads which can be air-dropped from planes, launched on missiles or fired from artillery guns. The yield of these warheads, measured in terms of kiloton (kt), varies from 0.1 kt to 10-15 kt. A nuclear explosion of a 5-kt yield is estimated to spread total destruction in a little over a one-mile radius.
Small Is Scary 
"Yes, Pakistan Has Tactical Nukes" 
