The treaty banning nuclear testing is yet to ratified by the US and other countries, but it is key to the steps to the path of nuclear disarmament, writes Jason Douglas.

While protect itself with the threat of using nuclear weapons is far from ideal, it is infinitely preferable to the situation in which the US has now found itself: chasing its tail over costly and ineffective missile technology, writes Jason Douglas.

The problem with deterrence theory is that, at its root, it is based on threats which can lead states to the brink of war. North Korea’s behaviour should instead be viewed as an opportunity for engagement, writes Jason Douglas.

While a functioning nuclear weapon remains years away for North Korea, recent activities and statements will nevertheless have a worrying effect in Seoul, Washington and the wider world, writes Jason Douglas.