Pres­i­dent Don­ald Trump has retweet­ed an audio record­ing that U.S. intel­li­gence offi­cials have described as being part of a Russ­ian cam­paign to den­i­grate Demo­c­ra­t­ic pres­i­den­tial can­di­date Joe Biden. The excerpt of it retweet­ed by Trump cen­ters on the ouster of Ukraine’s chief pros­e­cu­tor, who had pre­vi­ous­ly inves­ti­gat­ed the own­er of a Ukraine ener­gy com­pa­ny where Biden’s son, Hunter, once held a board seat.