2003–4
Cisco sues Huawei for stealing source code; the suit is settled with neither side revealing terms.

2005
US Air Force hires the RAND corporation to examine threats from Chinese networking firms; it concludes there is a “digital triangle” of Chinese military, state research groups, and companies like Huawei.

2007
NSA  begins its “Shotgiant” effort to pierce Huawei’s networks and exploit its systems.

2008
US blocks Huawei from buying 3Com on national security grounds.

2010
US persuades Australia to kill a plan to let Huawei build a national broadband network.

2011
In an open letter to the US, Huawei denies that it is a front for the Chinese government, and invites investigation.

2012
The House Intelligence Committee produces a long report urging the US to “block acquisitions, takeovers or mergers” with Huawei, and to exclude its equipment from US systems.

2013
The US approves purchase of Sprint Nextel by Softbank Corporation, but under conditions that probably exclude Huawei equipment.
Vice President Joseph R. Biden Jr., on a trip to Seoul, urges South Korea to kill a contract for Huawei to build an advanced telecom network for Seoul.
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