Hezbollah has pounded northern Israel with 140 rockets, a day after the militant group’s leader vowed to retaliate against Israel for a mass bombing attack, the Israeli military and the militant group said.

Hezbollah admits Israel dealt a severe blow with exploding pagers and walkie talkies, but neither side seems to heed U.S. calls to avoid a wider war.

Visiting White House envoy Amos Hochstein met with Netanyahu and other top officials Monday to try to soothe tensions and avoid the opening of a new front between Israel and Lebanon. Netanyahu told the envoy that Israel will do “whatever is necessary” to bring home the residents.