Article Photos: Cyberattacks a growing irritant in US-China ties 1/1

FILE - In this Feb. 19, 2013 file photo, the building housing âUnit 61398â of the Peopleâs Liberation Army is seen in the outskirts of Shanghai. Signs are growing that Chinaâs massive allegedly state-sponsored computer hacking is imperiling its relations with the U.S., lending urgency to fledgling efforts by the sides to engage on the issue. (AP Photo/File)