IDF claims it captured terror operative in Syria

Israel "made a mistake" in attacking Iran over the weekend and will now "taste the response, an unimaginable response," Iran's Revolutionary Guard Corps Commander-in-Chief Gen. Hossein Salami said on Iranian state TV on Thursday.

"You think you can change the story of domination of a great power called Islam by firing a few missiles? In Operation True Promise 2, you saw how your sky was cracked open. You saw how your missile shield worked. Once again you made a mistake, you will taste the response, an unimaginable response," Gen. Salami said.

By "Operation True Promise 2," Gen. Salami is referring to Oct. 1, when Iran sent a barrage of about 200 missiles toward Israel.

"See the behavior of the Iranian nation in the war against its enemies," he added.

-ABC News' Hami Hamedi and Ellie Kaufman

The director of nursing at Kamal Adwan Hospital in the northern Gaza Strip released a statement Thursday saying 120 patients and injured people are lacking medicine, food and water.

"We appeal to bring specialized medical delegations to restart the hospital and save people's lives," the nursing director said.

Doctors Without Borders received confirmation that one of their doctors has been detained by Israeli forces, along with "several other medical staff from Kamal Adwan hospital in north Gaza," after an Israeli military operation at the hospital on Oct. 26, the organization said in a release Thursday.

"We are extremely alarmed by the detention of our colleague," the release said.

-ABC News' Ellie Kaufman

Six paramedics were killed in Lebanon on Thursday, the Lebanese Ministry of Health said in separate statements.

One paramedic was killed, and two were wounded in a strike on an ambulance in Zefta in southern Lebanon.

Additionally, one paramedic was killed and two were wounded in Deir al-Zahrani, and four paramedics were killed in Dardghaya, the Lebanese Ministry of Health said.

"The Ministry of Public Health reiterates its condemnation of the occupation forces' continued targeting of ambulance crews and reiterates its appeal to the international community to put an end to this series of ongoing war crimes," the Lebanese Ministry of Health said.

On Wednesday, 45 people were killed, and 110 people were wounded from various Israeli attacks across the country, the Lebanese Ministry of Health said. Overall, 2,867 people have been killed, and 13,047 people have been injured since Israel's increased attacks on Lebanon in mid-September.

-ABC News' Ellie Kaufman

Following several days of high-level meetings, there has been "significant progress" toward a cease-fire in Lebanon, a senior official with knowledge of the negotiations told ABC News.

Israeli "Prime Minister [Benjamin Netanyahu] made it clear that the main issue is not the paperwork of this or that agreement, but Israel's ability and determination to enforce the agreement and thwart any threat to its security from Lebanon, in a way that will return our residents safely to their homes," Netanyahu's office said in a statement.

-ABC News' Jordana Miller