From ISW:
https://www.understandingwar.org/backgro...ct-updates
Quote:US National Security Advisor Jake Sullivan stated on May 20 that the United States may agree to transfer modern combat aircraft to Ukraine, including the F-16, on the condition that Ukraine does not use them to strike Russian territory. Sullivan stated the war in Ukraine has “evolved” and that F-16 fourth-generation fighter aircraft have now become “part of that mix” of weapons that Ukraine will need as part of a “future force to be able to deter and defend against Russian aggression as we go forward.”[12] Sullivan stated that any F-16s given to Ukraine – like other Western weapons provided to Ukraine – will be provided under the condition that they do not strike Russian territory.[13] Sullivan also stated that training Ukrainian pilots to use F-16s is the “obvious first step” and that the next steps are to “determine how to do the actual provision of planes.”[14] US President Joe Biden informed G7 leaders on May 19 that Washington will support a joint effort to train Ukrainian pilots on F-16s and other fourth generation aircraft but did not pledge that the US will send Ukraine the F-16s.[15]
https://www.understandingwar.org/backgro...ct-updates