What do US curbs on selling microchips to China mean for the global economy?

Washington's ban on hi-tech exports to China marks a huge gambit for economic supremacy for the next decades

The US has taken unprecedented steps to limit the sale of advanced computer chips to China, escalating efforts to contain Beijing's tech and military ambitions.

The moves are designed to cut off supplies of critical technology to China that may be used across sectors including advanced computing and weapons manufacture.