Mr. Bolton, a Trump aide turned critic, is part of a string of presidential foes to become prosecutorial targets. But his case gained momentum in the Biden administration.

© Jason Andrew for The New York Times

Some charges against the onetime national security adviser resemble the dropped case against President Trump, but there are also differences.

© Erin Schaff/The New York Times

The foreign service officer failed to disclose his contact with the woman, the daughter of a Chinese Communist Party official, the State Department said.

The British government has come under scrutiny after charges against two men accused of spying for Beijing were dropped. Here’s what to know.