The attack ends a period of calm that has prevailed since March and comes on the heels of Israel's return of the remains of 91 Palestinian militants.
Speaking in Prague, Israel's prime minister compared Iran's nuclear drive to that of North Korea, and said he has seen no evidence of Iran taking upcoming talks seriously.
A look at disclosed positions.
Former government and security officials' criticism of the Netanyahu government's hard-line approach on Iran is now coupled with the uncertainty of an election campaign.
Disagreements in Israel over whether to attack Iran have erupted into the open. In one corner, the Netanyahu government. In the other, a number of Israeli security officials.
Israeli Defense Minister Ehud Barak insisted that Iranian leaders are not rational, rebutting comments made earlier in the week by IDF chief Benny Gantz.