Israel Katz, Israel defense minister, said on the 28th (local time) that Israel carried out a preventive strike against Iran.
According to Reuters and the Associated Press, the Minister said Israel launched a missile attack of a preventive nature against Iran that day.
A preventive strike is similar to a preemptive strike in that it attacks the opponent first. However, while a preemptive strike is carried out when concrete signs of danger appear and harm is imminent, a preventive strike differs in that it is a military action focused on eliminating the possibility of danger in advance.
According to the reports, explosions were heard in Tehran, the capital of Iran.
Israel's military authorities said they issued nationwide air-raid sirens as a preventive measure in preparation for possible retaliatory attacks. They also banned all educational activities, gatherings, and workplace operations except for "essential sectors."
A direct military clash between Israel and Iran is the first in about eight months since the "12-day war" in June last year, when Iran's nuclear facilities and military leadership suffered serious damage.