An Iranian man was critically injured by his own bomb in a series of blasts, raising fears he and two countrymen accomplices had planned an attack just a day after operations against Israeli diplomats in India and Georgia.
Ehud Barak said Tuesday's explosion "proves once again that Iran and its proxies continue to perpetrate terror".
He said that Iran and its Lebanese ally Hizbollah are "unrelenting terror elements endangering the stability of the region and endangering the stability of the world".
"We know who carried out the terror attacks, we know who sent them, and Israel will settle the score with them," he said.
The man blew both his legs off when he tried to escape police by throwing a grenade at pursuing officers, but it bounced off a tree and he was caught by the full force of the blast.