A new Trump-Kim summit would be a nightmare for everyone but Pyongyang

It is clear that US President Donald Trump is pushing hard for a fresh summit with North Korean leader Kim Jong-un in the coming months. To achieve that, he appears prepared to downgrade and jeopardise the US-South Korea alliance, as seen in his recent move to scale back joint military exercises.
For Trump, this will be a purely bilateral exercise, with both Seoul and Beijing totally sidelined, let alone Moscow and Tokyo. Equally, there is now a general acceptance that the issue of...