A police officer in the Russian-occupied city of Kherson was killed on Wednesday by an explosive device planted by the Ukrainian "resistance movement" and another one was injured, Ukraine's defence ministry said. The reported killing is the latest in a series of attacks on local officials in regions captured by Russia since it invaded Ukraine in February. "The resistance movement clears Kherson of traitors," the ministry's defence intelligence directorate said a statement. The device was set off by radio control on a street just north of the city centre, it said. On Saturday, the directorate urged citizens in the Kherson...