Israel-Gaza-Lebanon updates: Netanyahu calls UN troops Hezbollah 'human shields'

Doctors Without Borders said northern Gaza has become "unlivable" due to bombings and evacuations.

"These forced mass evacuations of homes and bombing of neighborhoods by the Israeli forces are turning the north of Gaza into an unlivable wasteland, effectively emptying out the whole north of the Strip of Palestinian life," the organization said in a statement on Tuesday. "To make matters worse, no humanitarian supplies have been allowed to enter the area since 1 October."

The Israel Defense Forces issued an evacuation order for northern Gaza earlier this week, saying the area is "still considered a dangerous combat zone."

Dr. Hossam Abu Safiya, the director of the Kamal Adwan Medical Complex, which is within the evacuation zone, said they have 24 hours to completely evacuate patients and staff.

"This is a dangerous measure that threatens the collapse of the healthcare system in the northern Gaza Strip," he said in a statement on Tuesday.

The Lebanese Ministry of Health provided an update on the death toll from the attacks by Israeli forces.

Thirty-six people were killed and 150 were wounded Monday, according to the agency.

Earlier in the day, the Israel Defense Forces claimed that it killed at least 50 Hezbollah members, including six senior commanders, in "significant airstrikes" on Monday.

Since the start of the conflict with Israel, 2,119 people have been killed and 1,019 have been wounded, according to the Lebanese Ministry of Health.

-ABC News' William Gretsky

Israeli Defense Minister Yoav Gallant has postponed Wednesday's planned Pentagon meeting, the Pentagon confirmed.

Pentagon spokesperson Sabrina Singh said at a briefing on Tuesday that the Israeli Ministry of Defense had "just informed" them that Gallant will be postponing his trip to Washington, D.C.

When asked why Gallant was postponing the trip, she said, "You'd have to speak to the Israelis on that one. I was just told that he postponed his trip."

Gallant was to discuss "ongoing Middle East security developments" during the meeting, the Pentagon had said.

-ABC News' Luis Martinez

The Israel Defense Forces claims to have killed at least 50 Hezbollah members, including six senior commanders, in "significant airstrikes" on Monday.

The IDF said it conducted a series of strikes on underground Hezbollah command centers in southern Lebanon.

Hezbollah has not commented on the IDF's strikes.