Obama Promises Thorough Inquiry Into Afghan Attack.

WASHINGTON -- President Obama pledged on Tuesday that a thorough investigation would be conducted into the bloody rampage by an American soldier in Afghanistan. ''The United States takes this as seriously as if this was our own citizens and our own children who were murdered,'' Mr. Obama said, in his first public remarks since the shooting took place on Sunday. He said he was ''heartbroken by the loss of innocent life,'' calling it outrageous and unacceptable. ''It's not who we are as a country, and it does not represent our military,'' he added. [ABSTRACT FROM AUTHOR]