Lack of profits and the threat posed by western countries are raising concern about the sustainability of Beijing’s AI boom

Trillions of dollars have been wiped from China’s stock markets in recent months amid increasing anxiety about the future of artificial intelligence, as Beijing races against the United States for dominance in the sector.

The STAR 50 Index, which tracks technology and innovation companies on the Shanghai stock exchange, has plunged 40% since June. Other indexes of major companies dropped by about 20% over the same time period.

US military says the restrictions on the electric vehicles at Kadena airbase also apply to delivery drivers and taxis

One of America’s biggest overseas military bases has banned vehicles made by the Chinese electric vehicle maker BYD over security concerns, the US military in Japan said on Tuesday.

The ban, which went into effect this week at Kadena airbase on the southern Japanese island of Okinawa, has fueled speculation that similar measures could be taken at other US military facilities as part of Washington’s crackdown on Chinese technology it suspects of being used to collect sensitive information.