Strict count — full-scale wars or major armed attacks where Israel was not the immediate initiator: I’d say
4 clear cases since 1948.
| Case | What happened | Why it fits |
|---|
| 1948–49 Arab-Israeli War | After Israel declared independence, Egypt, Transjordan/Jordan, Syria, Lebanon, and Iraq attacked. | This was an existential attack on the new state. |
| 1973 Yom Kippur War | Egypt and Syria launched a surprise attack on Israel on October 6, 1973. | Israel was caught by surprise; Egypt/Syria initiated the war. |
| 2006 Lebanon War | Hezbollah carried out a cross-border attack, killed and captured Israeli soldiers, and the war followed. | Non-state actor, but a major organized attack from Lebanon. |
| October 7, 2023 Hamas-led attack | Hamas-led forces attacked southern Israel, killing about 1,200 people and taking around 250 hostages. | A large-scale surprise attack on Israeli civilians and military sites. |
Broader count — including repeated major terror waves, rocket wars, and border attacks: then the number becomes
well over a dozen, because you’d add fedayeen raids in the 1950s, PLO attacks, Munich/airliner attacks abroad, the First and Second Intifadas, Gaza rocket wars, Hezbollah rocket fire after October 7, Iranian missile/drone attacks, and so on.