KHARKIV, Ukraine (AP) — Ukrainian forces are fighting to hold off a Russian advance aimed at capturing an eastern industrial region along with Ukraine’s last holdout in the southern city of Mariupol. The United Nations is trying to broker an evacuation of civilians holed up with Ukrainian fighters in a steel mill and from other parts of the bombed-out port city. Two women whose husbands belong to the Azov Regiment of Ukraine’s National Guard say they fear soldiers will be tortured and killed if left behind and captured by the Russians. They shared video and photos with The Associated Press of wounded men with open wounds or amputated limbs.