WASHINGTON (Reuters) - A U.S. military probe has exonerated U.S. troops in the deaths of Iraqi civilians in the town of Ishaqi in March, finding American forces followed standard procedures and committed no misconduct, defense officials said on Friday. The Ishaqi incident was one of a handful involving civilian deaths being investigated by the U.S. military, including the deaths of 24 civilians in the town of Haditha last November. Police in Ishaqi, 60 miles north of Baghdad, have said six adults and five children were shot dead in a U.S. military raid on a home on March 15. The U.S....