"Good faith" is hardly a legally binding term, but world powers wove it into a landmark nuclear deal they signed 50 years ago.

The Nuclear Non-Proliferation Treaty was designed to stop the spread of nuclear weapons and, in time, eliminate them completely.

But it did not outline the concrete steps needed to destroy existing stockpiles. And now, some experts warn the danger of a nuclear war is greater than it has ever been.

So, what does it take to fend off this threat? And who decides which countries get to have nuclear weapons - while others don't?

Presenter: Elizabeth Puranam

Guests:

Tariq Rauf - former head of the Verification and Security Policy Co-ordination Office at the International Atomic Energy Agency

Mark Fitzpatrick - former Us deputy under-secretary for proliferation

Happymon Jacob - associate professor of diplomacy and disarmament Studies, Jawaharlal Nehru University

Source: Al Jazeera News