The dust has yet to settle in Malaysia’s Negeri Sembilan, where a royal row has led to the fall of a state government and left the public wondering who, exactly, is in charge. Observers warn that the months-long constitutional crisis could create ripple effects well beyond the state’s borders, testing the entire nation’s systems of monarchy and government. The dispute centres on which of two men: the incumbent, Tuanku Muhriz Tuanku Munawir, or his intended replacement, Tunku Nadzaruddin Tuanku...