Targeted assassinations, military strikes, cyber attacks and public insults... Since 1979, a simmering conflict between Iran and Israel has played out amid crises in the Middle East. But Iran's attack on Israel on Sunday, April 14, in retaliation to Israel's strike on the Iranian consulate in Damascus, Syria two weeks earlier, has now brought the two powers into direct confrontation.

Yet Israel and Iran have not always been hostile towards each other. At one time, the two countries even cooperated in many areas, under the leadership of the United States. How did this enmity come about, and how did Iran build an "axis of resistance" around Israel, funding and arming regimes and militia groups hostile to it?

In this three-minute video, Le Monde explains the genesis of relations between Iran and Israel and the turning point of the Iranian Revolution, which definitively transformed relations between the two countries.