David Rush, a longtime C.I.A. officer, appears to have first had contact with Stephen A. Feinberg during President Trump’s first term. Some officials said the two men were not close.

© Tom Brenner for The New York Times

The director of Britain’s electronic surveillance agency warned that Moscow was getting more brazen, adding that estimates suggested 500,000 Russian soldiers had been killed in the Ukraine war.

The Trump-Xi summit emphasized stability. But China’s recruitment of foreign agents has fueled suspicion of Chinese Americans.

A staff member on the House China Committee was promised $10,000 for U.S. policy insights, on issues like Venezuela and rare-earth minerals.

Lu Jianwang, a U.S. citizen, is accused of working on behalf of the Chinese government to target dissidents. A co-defendant has pleaded guilty.