The United States has designated Chinese technology leaders Alibaba, BYD, and Baidu as companies supporting China's military, adding them to an expanded blacklist that could complicate ongoing diplomatic efforts between Washington and Beijing. The Pentagon updated its list of "Chinese military companies" on Monday, including the prominent commercial brands for the first time.

The designation comes amid years of strained relations between the two global powers and is likely to further test the fragile detente. The Pentagon's list, established in 2021, now encompasses 188 firms, an increase from 134 previously, and is updated annually.

Alibaba, China's e-commerce behemoth, has denied any military affiliation, stating there is "no basis" for its inclusion and that it will pursue legal action. BYD, a major electric vehicle manufacturer, and search engine giant Baidu did not immediately comment. The Chinese embassy in Washington called the designation "discriminatory" and an overreach of national security concerns, urging the U.S. to cease its "wrong practice."

Under the new rules, companies on the list and their controlled entities will be barred from being considered for U.S. defense contracts. These rules are set to take effect later this month. The Pentagon's definition of a "Chinese military company" includes entities owned or controlled by China's military, or those contributing to its "military civil fusion" strategy, which aims to integrate civilian and defense research.

According to the Pentagon's update, Alibaba, BYD, and Baidu were identified due to their affiliations with state-owned entities like the Assets Supervision and Administration Commission and the Ministry of Industry and Information Technology. The criteria for designation also require companies to conduct some of their operations within the United States.

This move aligns with broader U.S. efforts to counter China's technological and military advancements. Republican lawmaker John Moolenaar, chair of the House Select Committee on the Strategic Competition Between the United States and the Chinese Communist Party, stated the list serves as a warning about Chinese companies operating against U.S. interests.

The inclusion of such globally recognized brands highlights the increasing intersection of commercial technology and national security concerns in the U.S.-China relationship. The Pentagon's "military-civil fusion" strategy, as defined by the U.S., posits that China leverages its commercial sector for military modernization.

Further actions or responses from the designated companies, as well as potential retaliatory measures from Beijing, remain to be seen. The expansion of the list underscores the ongoing strategic competition and the increasing scrutiny of Chinese firms operating internationally.