Today nine nations collectively control more than 15,000 nuclear weapons, each hundreds of times more powerful than those dropped on Hiroshima and Nagasaki. We don't need more nuclear weapons; we need a new generation to face the unfinished challenge of disarmament started decades ago. Nuclear reformer Erika Gregory calls on today's rising leaders -- those born in a time without Cold War fears and duck-and-cover training -- to pursue an ambitious goal: ridding the world of nuclear weapons by 2045.

Erika Gregory: The world doesn't need more nuclear weapons

The world doesn't need more nuclear weapons

Over 15,000 nuclear weapons exist globally, with 1,800 on high alert, capable of launching within 15 minutes of command.

Historic 'Megatons to Megawatts' program transformed Russian warheads into fuel, lighting 1 in 10 US bulbs for two decades.

A vision for 2045: Eradicate nuclear weapons, leveraging the anniversary of their inception to champion global disarmament.