Pakistan builds low yield nuclear capability,concern grows

Pakistan's successful test of a missile able to carry short range nuclear weapons threatens to raise tensions in a region already nervous that the death of Osama bin Laden will create more instability.

Tactical nuclear weapons, as these are called, are often seen as more dangerous than the traditional strategic weapons because their small size and vulnerability to misuse. Theft makes them a risk to global security.

The biggest concern is that these low yield weapons are seen as less destructive and therefore more likely to be used than other classes of weapons, forcing most nuclear states to minimise the risk by cutting back stockpiles.

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