Pakistan Army Launches Big Operation After Airport Attack

(Reuters) - Pakistan sent troops, artillery and helicopter gunships to the troubled North Waziristan region on Sunday in a long-expected military operation just a week after a deadly insurgent attack on the country's biggest airport. The Taliban and ethnic Uzbek fighters holed up in North Waziristan -- home to some of Pakistan's most feared militants and al Qaeda commanders -- have both claimed responsibility for last Sunday's commando-style attack on Karachi airport.