While there is still risk associated with any escalation of tension on the Korean Peninsula, this is far from uncharted territory.
Kim Jong Un has followed his father and grandfather in ruling by fear. The coronavirus pandemic has made North Korea ever more isolated, while expanded military capabilities make it a growing threat.
North Korea has tended to ratchet up tensions when the U.S. is seen to be weak and when it feels it can yield greater concessions, a scholar explains.
Every time North Korea needles the US with another provocation, it makes it harder for Donald Trump to mobilise the domestic support for a return to the negotiating table.
North Korea is a major military threat to the US and its Asian allies, but exactly how powerful are its nuclear weapons? An earth scientist explains why it’s hard to answer this question.
Earthquakes can shape political decisions so understanding them is crucial.
Trump and Kim are due to meet this spring. But if these talks fail could international arbitration provide - as it has in the past - an alternative way out of the North Korean crisis?