"Under the optimistic scenario, I think, it will be the first half of next year," Kuleba said on Thursday.Kuleba further said that the F-16 jets will be delivered to Ukraine after Ukrainian pilots complete the training courses and appropriate infrastructure is arranged, Xinhua news agency reported, citing the Interfax-Ukraine news agency.Last week, Yuriy Ignat, spokesman for the Ukrainian Air Force, said that Ukrainian pilots, currently undergoing simulator training, will start flights with instructors on real F-16 jets in several weeks.The Netherlands, Denmark, Norway and Belgium have pledged to transfer F-16 jets to Ukraine to help the country upgrade its combat aircraft fleet amid the conflict with Russia.--IANSint/sha(Disclaimer: This post has been auto published from IANS news agency without any modification to the text and has not been reviewed by editor)