 On 16 May, an Israeli aircraft is shot down in air combat, probably by a Soviet MiG-21 On 22 June 1970, a Soviet pilot flying a MiG-21MF shot down an Israeli A-4E.After that, some more successful intercepts by Soviet pilots and another Israeli A-4 being shot down on 25 June.Israel decided to plan an ambush (Operation Rimon 20) in response.