Factbox-Ukraine wants F-16 jets - how is coalition developing for training pilots?

FILE PHOTO: F-16 aircrafts fly during a NATO media event at an airbase in Malbork, Poland, March 21, 2023. REUTERS/Lukasz Glowala

(Reuters) - President Volodymyr Zelenskiy renewed his appeal on Wednesday for U.S.-built F-16 fighter jets, saying their appearance with Ukrainian pilots would be a sure signal from the world that Russia's invasion would end in defeat.

"The main thing is the speed in training and in supply - meaning the time between decisions in real protection for our skies," said Zelenskiy, whose air force uses Soviet-era jets.