Israeli Prime Minister Benjamin Netanyahu vowed Monday that Israel will keep fighting despite international criticism, and said he has no plans to resign.

Netanyahu said Israel will not agree to a cease-fire, saying doing so would mean surrendering to Hamas.

Netanyahu implored the international community to back Israel, framing the war as a fight for civilization itself.

He said Hamas will continue to use civilians as human shields as long as the international community keeps blaming Israel for their deaths.

-ABC News' Matt Rivers

The United Nations Relief and Works Agency for Palestine Refugees said 63 of its staff members have been killed and at least 22 staffers have been injured since Oct. 7.

Ten have been killed in the last 72 hours.

Pvt. Ori Megidish, a female Israeli soldier who was kidnapped by Hamas on Oct. 7, was rescued during the Israeli military's ground operations overnight, the Israel Defense Forces said Monday.

She's now home with her family, the IDF said.

Editor's Note: An earlier IDF statement said a kidnapped female Israeli soldier was released, but later clarified that she was rescued.

The death of Shani Luk, a 23-year-old German-Israeli woman who was kidnapped by Hamas on Oct. 7, was confirmed by both the Israeli Foreign Ministry and the German government on Monday.

German Chancellor Olaf Scholz wrote on social media, "The news of Shani Louk's death is terrible."

"This shows the full barbarity behind the Hamas attack - who must be held accountable." Scholz said. "This is terror, and Israel has the right to defend itself."

Israeli officials released a statement Sunday following reports, including from The Associated Press, that hundreds of people stormed the Makhachkala main airport and landing field in southern Russia to protest the arrival of a flight from Tel Aviv. The AP cited Russian news agencies and social media.

"The State of Israel takes seriously attempts to harm Israeli citizens and Jews everywhere," the Israeli Prime Minister's Office and Ministry of Foreign Affairs said in a joint statement Sunday.

"The Prime Minister's Office, the Ministry of Foreign Affairs and the National Security Headquarters (NSH) are monitoring the development of events in southern Russia in the Dagestan province," it continued. "Israel expects the Russian law enforcement authorities to protect the safety of all Israeli citizens and Jews wherever they may be and to act resolutely against the rioters and against the wild incitement directed against Jews and Israelis."

"Israel's ambassador to Russia, Alex Ben-Zvi, is working with the authorities in Russia to ensure the safety of Israelis and Jews there," the joint statement read.

The Russian Federal Air Transport Agency said, "The measures are in effect until the situation normalizes. Law enforcement agencies are working on the spot," adding that "the planes that were supposed to land in Makhachkala were redirected to alternate airfields."

In a statement, Sergei Melikov, the head of Dagestan, said the actions of the crowd were a gross violation of the law. "There is no courage in waiting in a crowd for unarmed people who have not done anything forbidden," Melikov said. "There is no determination to break into the airport territory. There is no honor in swearing at strangers, reaching into their pockets and trying to check their passport. There are no good intentions in attacking women with children who were undergoing treatment abroad."

"What happened at our airport is outrageous and should receive an appropriate assessment from law enforcement agencies! And this will definitely be done,” he added.

More than 20 people were injured at the Makhachkala airport, the Ministry of Health of Dagestan said early Monday local time. Two people of the 10 in hospitals were in serious condition, the Ministry said. More than 10 people received medical aid at the airport.

-ABC News' Bruno Nota, Natalia Shumskaia and Will Gretsky