Israel has long blamed Hamas for civilian and children deaths, arguing that the militant group uses innocent people as human shields.

The wave of exploding electronic devices used by Hezbollah members could be a prelude to a wider attack by Israel.

Israeli Defense Minister Yoav Gallant ushered in what he called a “new phase” in the war with regional Islamist groups and said troops would be diverted to the Lebanese border, an indication that long-held fears of a wider conflict may soon be realized.

Israel carried out dozens of airstrikes across southern Lebanon today, one of the most intense bombardments in the country this year. The strikes came hours after Hezbollah’s leader vowed that “retribution will come” to Israel for the explosions of Hezbollah members’ hand-held devices.

Walkie-talkies and solar equipment exploded in Beirut and other parts of Lebanon on Wednesday in an apparent second wave of attacks targeting devices a day after pagers used by Hezbollah blew up, state media and officials for the militant group said.

Lebanon’s death toll from a series of walkie-talkie and pager explosions this week rose to 37, according to local authorities, an illustration of the devastation wrought by a wave of suspected Israeli attacks against Hezbollah militants.