Ms. Gabbard adjusted her position on warrantless wiretaps of overseas communications. She promised not to oppose reauthorization of the measure, a key switch in time that reassured Senator Tom Cotton of Arkansas, the Republican chairman of the Intelligence Committee, and Senator Todd Young, Republican of Indiana and one of the fence sitters.

As Tulsi Gabbard gets to work as the director of national intelligence, will U.S. allies curtail their willingness to share sensitive information with us?