Why are there still so many nuclear weapons around the world - BBC News
There are far fewer nuclear weapons now than at the height of the Cold War and the major nuclear powers have all signed up to the principle of disarmament.
But there are fears of a renewed nuclear arms race between the US, Russia and China.
BBC Reality Check's Jack Goodman takes a look at the facts and figures behind the world's nuclear arsenals.
But there are fears of a renewed nuclear arms race between the US, Russia and China.
BBC Reality Check's Jack Goodman takes a look at the facts and figures behind the world's nuclear arsenals.