U.S. curbs China investment and iPads head to Vietnam

Hello, this is Kenji from Hong Kong. Normally at this time of year, the city would be preparing to mark the anniversary of the Tiananmen Square crackdown on pro-democracy protesters that took place on June 4, 1989. But Beijing's tightening control of the city means that for a third year in a row, no major commemorations are being planned.

Another date involving the Chinese military, however, is also coming up: On Friday, a U.S. ban on investment in companies linked to China's armed forces is set to take full effect. Thirty-three years on from Tiananmen, it is another reminder of how the U.S. is still grappling with its relationship with Asia's leading economy.