Nuclear weapon
But the US national security adviser used to want to.
Making sense of why the current US administration would scupper what was, for many, Obama's most significant foreign policy achievement
It was aimed at an audience of one.
Experts have said that the Punggye-ri test site has mostly been rendered useless.
A 'big gift to the entire Korean nation and every peace loving person in the world'.
He calls it 'big progress!'
The threat of nuclear war is an existential threat to everything positive that humanity has achieved so far