Afghan attack: Killed general was true hero, U.S. says

President Barack Obama plans to withdraw most troops from Afghanistan later this year.

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The U.S. army has paid tribute to Maj Gen Harold Greene, shot dead by an Afghan soldier in an insider attack on Tuesday, as a "true hero," according to the BBC.

Greene's death was the highest-ranking American fatality since the 9/11 attacks. He served as the deputy for systems acquisitions at the U.S. Army headquarters.

The U.S. Defense Department also identified the assailant, who was wearing a uniform, as an Afghan soldier and said that he was killed after he opened fire on coalition forces, his supposed allies.

"I can... confirm among the casualties was an American general officer who was killed," the Pentagon spokesman, Rear Admiral John Kirby, told reporters.

Kirby said that he would not give the general's name pending notification of next of kin.

Greene's official biography said that the New York State native held a doctorate in materials science from the University of Southern California as well as three master's degrees.

The general was the highest-ranking US officer killed since the September 11, 2001 attacks when Lieutenant General Timothy Joseph Maude was killed by a hijacked airliner that crashed into the Pentagon.

No U.S. general has been killed in combat since the Vietnam War, with top-ranking service members spared during the Iraq war and, until now, the Afghanistan conflict.

President Barack Obama plans to withdraw most troops from Afghanistan later this year.

A U.S. official, speaking to AFP on condition of anonymity, said that around 15 people were injured including eight Americans.
The nationalities of the other victims were unclear, but the German army said that one of its generals was wounded and the US official said that the injured included Afghans.

The Pentagon spokesman said that the assailant was killed, although he did not have more detail on how the incident unfolded.

We believe that the assailant was an Afghan soldier," Kirby said.

Kirby said it was too early to assess whether U.S. forces needed to improve vetting of Afghan troops. But he described the attack as an isolated incident and credited Afghan troops for their work in securing national elections.

"I've seen no indication there's a degradation of trust between coalition members and their Afghan counterparts," Kirby said.

"It's impossible to eliminate, --completely eliminate -- that threat, I think, particularly in a place like Afghanistan, but you can work hard to mitigate it," Kirby said of insider attacks.

"As terrible as today is -- and it is a terrible day, a terrible tragedy -- we haven't seen in the course of the last year or so... a 'spate' of these insider threat attacks. I think that's testament to the good work authorities have done," he said in response to a question.

(Updated by Al Arabiya)