A suicide car bomb explosion targeting Afghanistan's energy minister killed four civilians Sunday, while attacks and a violent storm killed six international troops, including three French and two American forces, officials said. The convoy carrying Energy Minister Ismail Khan, a powerbroker in the western region of Herat, was headed to the airport when a suicide car bomb exploded outside a high school, said Raouf Ahmadi, a police spokesman. Ahmadi said four civilians died and 17 people were wounded, including four of Khan's bodyguards. He said Khan escaped unharmed and arrived safely at the airport, according to a report of The Associated Press.