The State Department said it had decided to shrink the U.S. “footprint” in Baghdad, and Britain issued a warning about “increased tensions within the region.”

© Khalid Mohammed/Associated Press

The president now confronts the reality that stopping Iran’s drive toward a bomb may require letting it continue to make some nuclear fuel.

© Arash Khamooshi for The New York Times

The instructions from the office of Secretary General António Guterres were reviewed by The New York Times and came after President Trump ordered a review of U.S. funding to the agency.