New U.S. Rules Deal Blow to China's Chip Ambitions by Curbing Sales of Key Machinery

New U.S. rules curb sales of chip-making machinery to China, dealing blow to China's chip ambitions.

Machinery from Dutch firm ASML is key target; it makes lithography machines needed to make advanced chips.

China doesn't yet have the technology to make these machines domestically.

U.S. says it can regulate even non-U.S. companies if machines contain any American parts.

Crackdown strains U.S. alliances with Netherlands, Japan, though allies share concerns about China's rise.