Expiration of major US-China science treaty signals deep uncertainty amid high tensions

Landmark deal dating to 1979 is said to shield American researchers working in mainland but critics say Beijing is exploiting its terms.

Expiration of major US-China science treaty signals deep uncertainty amid high tensions

Expiration of major US-China science treaty signals deep uncertainty amid high tensions

Expiration of major US-China science treaty signals deep uncertainty amid high tensions

Expiration of major US-China science treaty signals deep uncertainty amid high tensions

Expiration of major US-China science treaty signals deep uncertainty amid high tensions