Turkish military launches a ground operation in northern U.S. against Turkish rebels . Operation continues recent Turkish attacks against PKK militants based in Iraq . We need to work together to resolve it , '' Casey said . The PKK has previously launched attacks on targets in U.S. . Spokesman says Iraq military `` aware '' of a Turkish operation of limited duration .
Turkish military launches a ground operation in northern U.S. against Turkish rebels . Operation continues recent Turkish attacks against PKK militants based in Iraq . The PKK has previously launched attacks on targets in U.S. . Spokesman says Iraq military `` aware '' of a Turkish operation of limited duration .