Niger has been fighting a militant Islamist insurgency for a decade and in January suspected jihadists attacked the same airport.

Iran's supreme leader says he disagrees with the deal and Donald Trump signed it "out of desperation".

The campus opens to the public this weekend with a museum, community amenities and more to honour the 44th US president.

The US defence secretary's move follows a US decision to scale back its commitments to a high readiness force within the alliance.