The White House is refusing to answer questions about secret U.S. records that confirm drone strikes carried out in Pakistan over a four-year period ran contrary to standards set forth publicly by President Obama. Classified U.S. documents reviewed by McClatchy show the Obama administration targeted and killed hundreds of supposed lower-level Afghan, Pakistani and unidentified “other” militants, even though they have claimed publicly to only target senior al-Qaeda leaders and associates planning to attack the United States. Records confirm drone operators were not always sure who they were killing. In one 12-month period, more than half of the estimated 482 people killed by drones were merely “assessed” as extremists, while media reports said only six top al-Qaeda leaders were killed during that time. Former Pakistani President Pervez Musharraf, meanwhile, has confirmed publicly for the first time Pakistan secretly collaborated with the United States to carry out drone strikes. Musharraf made the comments to CNN, saying it happened “only on a very few occasions.”