--FILE--piétons passent devant un magasin de Huawei à Yichang city, province de Hubei, Chine centrale 24 octobre 2013. L'administration Obama est privé
--FILE--Pedestrians walk past a store of Huawei in Yichang city, central Chinas Hubei province, 24 October 2013. The Obama administration is privately raising concerns with officials in South Korea about their plans to let a Chinese telecommunications giant develop the countrys advanced wireless network, expanding a quiet campaign to warn key allies against integrating the Chinese technology into their systems. The U.S. effort in South Korea, which followed a similar push with close ally Australia, shows the extent to which the Obama administration is concerned about the expansion of Chinas Huawei Technologies Inc. in building critical telecommunications networks for key allies. Washington sees as a risk that the companys equipment could be used for spying on communications among its partners, U.S. officials say. In 2011, the U.S. excluded Huawei from taking part in the building of a U.S. wireless network for emergency responders, citing national security concerns. Last year, Australia blocked a Huawei unit from competing for contracts linked to the countrys broadband network.