The Washington Post's Barton Gellman and Greg Miller detail the vast sums of money America spends on intelligence operations, far from public scrutiny.

Among the notable revelations in the budget summary:

•Spending by the CIA has surged past that of every other spy agency, with $14.7 billion in requested funding for 2013. The figure vastly exceeds outside estimates and is nearly 50 percent above that of the National Security Agency, which conducts eavesdropping operations and has long been considered the behemoth of the community.

•The CIA and NSA have launched aggressive new efforts to hack into foreign computer networks to steal information or sabotage enemy systems, embracing what the budget refers to as "offensive cyber operations."

•The NSA planned to investigate at least 4,000 possible insider threats in 2013, cases in which the agency suspected sensitive information may have been compromised by one of its own. The budget documents show that the U.S. intelligence community has sought to strengthen its ability to detect what it calls "anomalous behavior" by personnel with access to highly classified material.

•U.S. intelligence officials take an active interest in foes as well as friends. Pakistan is described in detail as an "intractable target," and counterintelligence operations "are strategically focused against [the] priority targets of China, Russia, Iran, Cuba and Israel."