KYIV, Ukraine (AP) — Ukraine’s top military commander said Thursday he visited troops holding the front line in a key eastern city besieged by Russian forces, while Ukrainian President Volodymyr Zelenskyy grappled with the fallout from a corruption scandal that has engulfed his administration. After Zelenskyy’s justice and energy ministers quit Wednesday amid the investigation into alleged energy sector graft, the government fired the vice president of Energoatom, the state-owned nuclear power