The Pentagon added it was seeking clarification about the way ahead. Niger said on Saturday it had revoked "with immediate effect" its military accord with the United States that had allowed Pentagon personnel to operation on its soil.
Pentagon spokesperson Sabrina Singh said the U.S. government had "direct and frank" conversations in Niger ahead of the junta's announcement, and was continuing to communicate with Niger's ruling military council known as the CNSP.
"The U.S. delegation was there to raise a number of concerns. ... We were troubled (about) the path that Niger is on. And so these were direct and frank conversations, to have those in person, to talk about our concerns and to also hear theirs," Singh said.
"U.S. officials expressed concern over Niger's potential relationships with Russia and Iran."
Since its July 2023 coup, the military junta that seized power in Niamey has kicked out French and European forces, and quit the Economic Community of West African States regional bloc. Like juntas in neighboring Mali and Burkina Faso, it has also strengthened military ties with Russia. High-level Russian defense officials including Yunus-bek Yevkurov, Russia's deputy defense minister, have visited the country and met with the junta leader.
The prime minister of the ruling junta, Ali Mahamane Lamine Zeine, visited Iran in January.
In its statement on Saturday, the ruling junta said it rejected what it called false allegations by the U.S. delegation that Niger "would have signed a secret agreement on uranium with the Islamic Republic of Iran."
Singh did not elaborate on U.S. concerns regarding Iran. The U.S. delegation to Niger on March 12-13 included U.S. Assistant Secretary of State for African Affairs Molly Phee, U.S. Assistant Secretary of Defense for International Security Affairs Celeste Wallander and the top U.S. general for the region, General Michael Langley.
The U.S. State Department said on Tuesday those talks were meant to address "Niger's return to a democratic path and the future of our security and development partnership." After the coup, the U.S. military consolidated its forces Niger, moving troops from Air Base 101 in the capital of Niamey to Air Base 201 in the city of Agadez.
The base had been a core part of the U.S. counter-terrorism strategy in the region and was once used to target Islamic State militants and Jama'at Nusrat al-Islam wal Muslimeen, an al Qaeda affiliate, in the Sahel.
Since the coup, the U.S. forces have been carrying out operations for force protection only, Singh said. Singh did not rule out a resolution that would allow U.S. military presence to remain in Niger, saying: "We want to see our partnership continue, if there is a pathway forward."