A decision on the F-16 is still under consideration, as Ukrainian pilots are set to start training this month.

According to CNN, the US is still waiting for European officials to submit a final plan for training Ukrainian pilots on F-16 fighter jets, which the US will have to authorize before the program can begin. The training is supposed to start this month, the Ukrainian president and European officials have said publicly.

But two months after President Biden announced US support for training Ukrainian pilots on F-16s, several critical details remain to be worked out. It is also still unclear which countries will commit F-16s to the training program and to Ukraine once the program is finished. Transferring the planes to Ukraine will require separate US approval.

US defense officials said that the US is still deciding whether to send American pilots to help train the Ukrainians, but the decisions will not be made until a final training plan is authorized.