against north korea, retaliation. a lot of people say maybe not. that the u.s. wouldn't want to do something so overt. you can't always measure north korea's response. maybe the north koreans took themselves out of the internet business to protect their small network. maybe the chinese took them out, you know, getting annoyed with north korea's constant rhetoric and leading to more instability in the region. the north korean system basically goes through china. so speculation is rampant. but right now nobody's stepping up and saying they did it. wolf. >> what is the pentagon focusing in on right now? >> they're focusing on defense right now, wolf. what we learned today is, shortly after it was made clear north korea was behind this attack, the pentagon moved very quickly to look once again at its military computer systems, classified and unclassified, to make sure they were protected from this very specific north korean attack pattern in cyber