BEIJING/WASHINGTON (Reuters) – China wants a clear explanation from Washington over reports that the U.S. National Security Agency infiltrated servers at the headquarters of telecoms giant Huawei Technologies Co, a Chinese foreign ministry spokesman said on Monday. Chinese President Xi Jinping raised the reports in a meeting with U.S. President Barack Obama on the sidelines of a nuclear summit in The Hague and was told that the United States did not spy to gain commercial advantage, White House deputy national security adviser Ben Rhodes said.