The Egyptians use heavy artillery, new MiG…

The Egyptians use heavy artillery, new MiG aircraft, Soviet advisers, and an advanced Soviet-designed surface-to-air missile system to inflict heavy losses on the Israelis.

Egypt's new Soviet-made arsenal threatens to alter the regional military balance with Israel.

Israeli air raids into Egypt are suspended, however, after the Soviet pilots begin to fly defensive combat patrols over parts of Egypt, and the battle shifts to the canal zone.

The tension in Israeli-Soviet relations escalates in July 1970, when Israeli fighter planes shoot down four Egyptian planes flown by Soviet pilots about thirty kilometers west of the canal.