According to reports, missiles possessed by North Korea - which the country is threatening to use in escalating tensions between the country and the South - have a range of about 1,800 miles.

What does this mean for U.S. targets said to be out of range? Could any American cities be hit? And, who should be concerned about a potential strike? Do we have the ability to stop a nuclear attack once a missile is fired?

Get answers on all these questions and more from today's Your World in the segment below: