Two Israeli airstrikes in the northern Gaza Strip on Tuesday killed at least 88 people, including dozens of women and children, health officials said, and the director of a hospital said life-threatening injuries were going untreated because a weekend raid by Israeli forces led to the detention of dozens of medics, writes KSN.COM.

Israel has escalated airstrikes and waged a bigger ground operation in northern Gaza in recent weeks, saying it is focused on rooting out Hamas militants who have regrouped after more than a year of war. The intense fighting is raising alarm about the worsening humanitarian conditions for hundreds of thousands of Palestinians still in northern Gaza.

Concerns about not enough aid reaching Gaza were amplified Monday when Israeli lawmakers passed two laws to cut ties with the main U.N. agency distributing food, water and medicine, and to ban it from Israeli soil. Israel controls access to both Gaza and the occupied West Bank, and it was unclear how the agency known as UNRWA would continue its work in either place.

“The humanitarian operation in Gaza, if that is unraveled, that is a disaster within a series of disasters and just doesn’t bear thinking about”, said UNRWA spokesperson John Fowler. He said other U.N. agencies and international organizations distributing aid in Gaza rely on its logistics and thousands of workers.

In Lebanon, the militant group Hezbollah said Tuesday it has chosen Sheikh Naim Kassem to succeed longtime leader Hassan Nasrallah, who was killed in an Israeli airstrike last month. Hezbollah, which has fired rockets into Israel since the start of the war in Gaza, vowed to continue with Nasrallah’s policies “until victory is achieved.”

A short while later, eight Austrian soldiers serving in the U.N. peacekeeping force in southern Lebanon were reported lightly injured in a midday missile strike.

The peacekeeping force, known as UNIFIL, said the rocket that struck its headquarters in Lebanon was “likely” fired by Hezbollah, and that it struck a vehicle workshop.