 Among these are the F-4 Phantom II, A-4 Skyhawk, F-15 Eagle, F-16 Fighting Falcon, and E-2 Hawkeye.The Israeli Air Force has also operated a number of domestically produced types such as the IAI Nesher, and later, the more advanced IAI Kfir, which were unauthorised derivatives of the French Dassault Mirage 5 (Israel bought 50 Mirage 5s from Dassault Aviation, but they were not delivered due to the French embargo imposed following the Six-Day war).The Kfir was adapted to utilise a more powerful US engine, produced under license in Israel.