U.S. Marines and Afghan security forces moved into Taliban-infested villages Wednesday evening in one of the Obama administration's first major military operations in the previously forgotten war in Afghanistan. The offensive was launched shortly after 1 a.m. local time in Afghanistan's southern Helmand province. More than 4,000 Marines and an estimated 650 Afghan soldiers and police sought to clear insurgents from towns and villages along the Helmand River Valley before the nation's Aug. 20 presidential election. Dubbed Operation Khanjar, or "Strike of the Sword," the military push was described by officials as the largest and fastest-moving of the war's newest...