David Sanger and Martin Fackler write in the NYT that the NSA “drilled into the Chinese networks that connect North Korea to the outside world, picked through connections in Malaysia favored by North Korean hackers and penetrated directly into the North with the help of South Korea and other American allies,” and also placed malware in North Korean computer systems “that could track the internal workings of many of the computers and networks used by the North’s hackers.” 

When insurgents sabotage it, American foreign aid can actually make violence and poverty worse. Hoover fellow Joseph Felter explains.

President Obama has promised to retaliate against North Korea for the large-scale hack of Sony Pictures Entertainment, but actual details about any planned U.S. action are few: The president only said last week before departing for Hawaii that the American response would be "proportional."

The FBI said today of the Sony hack: