Unidentified gunmen shot and killed a former Ukrainian politician on Wednesday morning outside a school in a wealthy suburb of Madrid, Spain's Interior Ministry said. Police received a call about the shooting of a Ukrainian citizen at 9.15 a.m. (0715 GMT) local time outside the elite American School of Madrid, located in Pozuelo de Alarcon, Madrid police told Reuters. "Several persons shot him in the back and the head and then fled towards a forested area," an Interior Ministry source said. The victim, Andriy Portnov, 51, was a senior aide to Ukraine's pro-Russian former President Viktor Yanukovich who was ousted...