BAGHDAD – Three U.S. service members were killed Wednesday in southern Iraq, adding to an already deadly month for U.S. forces here. The deaths, reported early Thursday by the Defense Department, come six months before most American forces are scheduled to withdraw from the country. Further details were not immediately available pending notification of families, the military said. Fifteen U.S. service members have either been killed or died in non-hostile incidents this month in Iraq, making it the deadliest month since 15 were killed in June 2009, according to iCasualties, which tracks U.S. military deaths. Thirty-nine service members have died...