The adversarial relationship between Washington and Moscow prevented U.S. officials from sharing any information about the plot beyond what was necessary, out of fear Russian authorities might learn their intelligence sources or methods.
The adversarial relationship between Washington and Moscow prevented U.S. officials from sharing any information about the plot beyond what was necessary, out of fear Russian authorities might learn their intelligence sources or methods.
During the Obama administration, the national security director (I think) created the policy of “duty to inform”. The idea being that American intelligence agencies had a duty to inform a target if they knew about an upcoming attack (even an adversary). A big exception is when the warning would compromise the source of the information.