On June 30, Donald Trump walked — briefly — into North Korea, making him the first sitting US president to enter the country, which is still technically under a 1953 armistice with the US. He took his stroll alongside one of the most intriguing and terrifying figures in global politics, the North Korean leader Kim Jong-un, a man in his mid-thirties who has the power to turn East Asia into a wasteland with his conventional and nuclear arsenal. For years, it has been common to dismiss his regime as insane. The capital, Pyongyang, is plastered with fierce anti-capitalist posters years after its communist neighbour China embraced McDonald’s, and Kim called Trump an “old lunatic” and “dotard”, and has warned that he could turn the capital