The Israeli Air Force is likely to purchase a used squadron of F-15 fighter jets from the US Air Force (USAF), due to a possible drop in its number of combat aircraft.

The decision also follows the delayed delivery of the F-35 stealth fifth-generation joint strike fighter (JSF) which is expected to arrive in 2018.

The F-35 fighter jets will enable Israel to terminate its aging F-15 and F-16 aircraft and boost its deterrence in the Middle East.

The fighter jet, which cannot be detected by existing radars, will also provide Israel with an edge over enemy nations that operate advanced anti-aircraft systems.

Israel had placed a $2.75bn contract for the purchase of 20 F-35s last year, which will be financed by US military assistance to Israel, according to the Jerusalem Post.