CRAWFORD, Texas — An angry President Bush on Tuesday condemned the bombing of U.N. headquarters in Baghdad and vowed that the next building that gets blown up in Iraq “will be done so by the professionals in our coalition.”

“Our military will not be intimidated by this measly improvised explosive,” Bush said. “And these killers will not determine what gets destroyed in Iraq in the future.”

Bush, who cut short a golf game in Waco, Texas, and returned to his ranch shortly after the attack, said he considered ordering an air-strike against all the remaining buildings still standing in Baghdad “to send a message to the terrorists.”

“The terrorists who struck today have again shown their contempt for America,” Bush said. “What, they didn’t think we levelled the country of Iraq enough ourselves?”

The explosion came on the heels of an attack on a water pipeline in Baghdad that left much of the city without water, but White House press secretary Scott McClellan reminded Americans that many Iraqi cities are still without electricity thanks to the Shock and Awe campaign executed by U.S. and British forces to start the war.

“Terrorists may be messing with the water, but we’re the ones who did a number on their electricity when we bombed their power plants,” McClellan said. “Let’s not forget that.”