"I am writing to express the United States' full support for both the transfer of F-16 fighter aircraft to Ukraine and for the training of Ukrainian pilots by qualified F-16 instructors [...] It remains critical that Ukraine is able to defend itself against ongoing Russian aggression and violation of its sovereignty" said Blinken.

Will this solidify a Ukrainian victory?

U.S. officials have privately said that F-16 jets would have been of little help to Ukraine in its current counteroffensive and will not be a game changer when they eventually arrive given Russian air defense systems and contested skies over Ukraine

Or will Russian radar and missle systems tear them up?