NEW : An attacker in an Afghan police uniform killed a NATO service member Sunday , Defense says . 3 ISAF troops were killed Saturday in an IED attack . Kandahar province Secretary of Defense Leon Panetta called Afghan President Leon Panetta on Sunday . NATO says an airstrike has killed a senior Taliban leader .
NEW : An attacker in an Afghan police uniform killed a NATO service member Sunday , ISAF says . 3 ISAF troops were killed Sunday in an IED attack . U.S. Secretary of Defense Leon Panetta called Afghan President Hamid Karzai on Saturday . NATO says an airstrike has killed a senior Taliban leader .