Weapons

U.S. military is developing 'variable nukes' that can be dialed up or down in power to to target everything from a small neighbourhood to an entire city

The US Air Force is planning to develop 'variable nukes' that can be dialed up or down in destructive power to target everything from a small neighbourhood to an entire city.

Current bombs already have or can be set to low yields of 20 kilotons, meaning an explosion wouldn't even touch an area a mile or so from the location of the detonation.

The new 'mini nukes' would offer the President 'a new option' military bosses say.