Reuters reports that President Obama recently ordered the NSA to curtail electronic spying on the headquarters of the United Nations in New York.

Obama’s order is the latest known move by the White House to limit the NSA’s vast intelligence collection, in the wake of protests by allies, including German Chancellor Angela Merkel, over U.S. spying on foreign heads of state.

The full extent of U.S. eavesdropping on the United Nations is not publicly known, nor is it clear whether the United States has stopped all monitoring of diplomats assigned to the U.N. in New York or elsewhere around the world.

“The United States is not conducting electronic surveillance targeting the United Nations headquarters in New York,” said a senior Obama administration official, who spoke on condition of anonymity.