Sgt. Mikhail Khokhlov, 37, has been arrested for allegedly killing his commander, Lt. Ivan Krivosheev, and wounding another soldier in the neck after the pair were said to have drunkenly mocked the gunman's last name .
Sergeant Mikhail Khokhlov, 37, killed Lieutenant Ivan Krivosheev, 37, with his AK-74 assault rifle as they guarded the occupied village Knyaze-Grigorivka in Kherson, Ukraine