Kyiv, Ukraine – Oleksiy Vadatursky was known as a “grain tycoon” who helped make Ukraine a key wheat exporter. A Russian missile killed him and his wife Raisa in their house in the southern city of Mykolaiv on Sunday, raising suspicion among Ukrainian politicians and pundits who called their death a calculated murder aimed at stalling the resumption of exports. Unlike other oligarchs – a group of super-rich and unpopular Ukrainians with immense political clout who gained control of key industries after privatising Soviet-era plants and factories – Vadatursky was widely respected as a self-made man. “He worked. He didn’t...