Good News from Iran, Bad News from Iraq

I just heard a report that Secretary Gates will speak about this later today:

A U.S. soldier in Baghdad opened fire on his fellow soldiers Monday, killing five American soldiers, a senior defense official said.

U.S. Army troops get a safety briefing before departing Camp Liberty, Iraq, in December 2008.

It is unclear if the shooter was among the five dead, despite initial reports that he died, the official said.

Three others were wounded in the incident at the U.S. military base, Camp Liberty, in Baghdad, the official said.