MIRANSHAH, Pakistan (Reuters) – U.S. drone aircraft fired missiles in Pakistan's North Waziristan tribal region on Monday, killing at least four militants, intelligence officials and tribesmen said, the latest strikes in a resumption of the air campaign. The unacknowledged Central Intelligence Agency drone program, a key element in President Barack Obama's counter-terrorism strategy, was …U.S. drone attacks kill at least 4 in Pakistan: officialshttp://news.yahoo.com/u-drone-attacks-kill-least-4-pakistan-officials-083659915.htmlhttp://news.search.yahoo.com/news/rss?p=pakistan&ei=UTF-8&fl=0&x=wrtpakistan – Yahoo! News Search Resultspakistan – Yahoo! News Search ResultsYahoo! News5