Ukraine has actively sought the U.S.-made F-16 fighter jets to help it counter Russian air superiority.

Washington gave Denmark and the Netherlands official assurances that the United States will expedite approval of transfer requests for F-16s to go to Ukraine when the pilots are trained, the official said.

A coalition of 11 countries was due to start training Ukrainian pilots to fly the F-16 fighter jets this month in Denmark. Denmark said that the country hoped to see "results" from the training in early 2024.