Trump's on the brink of a third nuclear age. Will Trump pull us back from the brink or push us over it? The world is entering a so-called ‘third nuclear age’. The first age started with the invention of the atomic bomb by US scientists. It’s characterized by the arms-races, brinksmanship, and Cold War competition between the US and USSR. But the second age was much safer. The US and Russia didn’t compete. In fact, they worked together to reduce the amount of nuclear weapons in the world and prevent new ones. Some even dreamed of ridding the world of them entirely. It was an historic period of time, it just didn’t last long. Competition is back, more countries are considering building nukes, and arms-control agreements are falling apart. This is the third nuclear age and Donald Trump is in the driver’s seat.