North Korea fired a ballistic missile Sunday, Seoul said, resuming a weapons-testing blitz after a month-long lull during the Beijing Winter Olympics, with the world’s attention now focused on Ukraine. The Sunday launch is Pyongyang’s eighth so far this year, including test-firing its most powerful missile since high-profile negotiations between leader Kim Jong Un and then US president Donald Trump collapsed in 2017. Diplomacy has languished ever since. And despite biting international sanctions, Pyongyang has doubled down […]