"The UAE and US were working toward an understanding that would address mutual defense security conditions for the acquisition," the official added. "The US remains the UAE's preferred provider for advanced defense requirements and discussions for the F-35 may be re-opened in the future."
The US State Department said the White House remained "committed" to the deal, which was seen as a cornerstone of an August 2020 agreement to normalize diplomatic relations between the UAE and Israel. The sale -- which would involve the most advanced US weaponry ever transferred to an Arab state -- has been on a collision course since then, with US politicians raising concerns about the deal.