Lebanese militant group Hezbollah says its intensified attacks along Israel’s northern border this week demonstrate to Israeli leaders that an all-out war would be costly, senior official Sheikh Ali Daamoush said in a sermon during Friday prayers.

Iran-backed Hezbollah militants launched dozens of rockets on Friday in a third day of retaliation for the killing of senior commander Taleb Sami Abdullah, 55. The Israeli military said approximately 35 projectiles were identified.

Cross-border attacks by Israel and Hezbollah have been taking place almost daily since the war in Gaza began in October.

The escalation comes as some Israeli leaders have threatened all-out war to silence Hezbollah’s rocket fire, and as the militant group seeks to pressure Israel during the ceasefire negotiations in support of its Palestinian ally Hamas.

US President Joe Biden said on Thursday he does not expect to seal a Gaza ceasefire deal in the near future, as an American-backed proposal with global support has not been fully embraced by Israel or Hamas.

Israel’s war against Hamas in Gaza has killed more than 37,100 people, according to Gaza’s Health Ministry, which does not distinguish between combatants and civilians in its count.

Palestinians are facing widespread hunger because the war has largely cut off the flow of food, medicine and other supplies. UN agencies say over one million in Gaza could experience the highest level of starvation by mid-July.

Israel launched the war after Hamas’s October 7 attack, in which militants stormed into southern Israel, killed some 1,200 people — mostly civilians — and abducted about 250.