North Korea’s recent string of weapons tests, including cluster munitions, marks its renewed show of military strength ahead of the US-China summit next month, even as Beijing may become a go-between to ease tensions on the Korean peninsula. Analysts say the summit could be an opportunity for China to arrange for subsequent talks between North Korean leader Kim Jong-un and US President Donald Trump. On Thursday, Pyongyang said tests conducted over the previous two days involved a radar-evading...