Iran's U.N. envoy warned the country had the "right to take all necessary measures to respond to this egregious violation."

Hundreds of handheld pagers exploded almost simultaneously across Lebanon and in parts of Syria on Tuesday, killing at least nine people, government and Hezbollah officials said. Officials pointed the finger at Israel in what appeared to be a sophisticated, remote attack.

First came two days of exploding pagers and walkie-talkies used by Hezbollah — deadly attacks pinned on Israel that also maimed civilians around Lebanon. Hezbollah’s leader vowed to retaliate , and on Friday the militant group launched dozens of rockets into northern Israel.