MOSCOW -- The relationship between the U.S. and China is like a game of water polo: competitive yet relatively civil on the surface, but rife with scratching and groin-kicking underwater.
A top executive of a Chinese telecommunications giant was arrested in Vancouver, Canada, earlier this month at the request of American officials. In response, China detained two Canadians.
The U.S. has accused Huawei Chief Financial Officer Meng Wanzhou, daughter of the company's founder, of trying to cover up Huawei's links to a firm that tried to sell Hewlett-Packard computer equipment to Iran's largest mobile-phone operator in violation of sanctions against Iran.
The U.S. had briefly...