Turkish President Recep Tayyip Erdogan said Wednesday he was cancelling plans to visit Israel because of its "inhumane" war against Hamas militants in Gaza.

"It's about time we talked clearly to those killing women and children," Erdogan said.

The leaders of Serbia and Kosovo have been invited to meet with top European Union officials to try to breathe life into talks aimed at normalizing their relations, as the 27-nation bloc's leaders gather in Brussels for a two-day summit starting Thursday.

Serbian President Aleksandar Vucic and Kosovo Prime Minister Albin Kurti are not expected to meet face to face, but the aim is to push forward with new "proposals and ideas" floated in exploratory talks last weekend, said Peter Stano, spokesman for EU foreign policy chief Josep Borrell.

The prospect of Israeli forces launching an assault into Gaza's dense urban neighborhoods, where militants use civilians as human shields, brings back searing memories of the deadly battles the U.S.-led coalition fought against the Islamic State group in Iraq and Syria.

For U.S. Defense Secretary Lloyd Austin and his military leaders, that intense combat and the thousands of civilians killed in airstrikes and neighborhood gunfights in Mosul and Raqqa are lessons to be shared as Israel prepares for a possible ground invasion against Hamas.

Russia has issued carefully calibrated criticism of both sides in the war between Israel and Hamas. But the conflict also is giving Moscow bold new opportunities — to advance its role as a global power broker and challenge Western efforts to isolate it over Ukraine.

While Moscow lacks leverage to mediate a settlement in the Middle East, it could try to play on some perceived credibility problems with the West's response to the crisis.

Israel has ramped up airstrikes across the Gaza Strip, reducing residential buildings to rubble and crushing families. Airstrikes have killed dozens at a time in leveled homes, according to witnesses.

The surging death toll foretells even greater loss of life ahead in Gaza, where Israeli forces are expected to launch a ground invasion seeking to destroy Hamas. Fuel shortages and the bombardment forced the shutdown of medical facilities, Gaza officials said.

The White House has said that "prudent contingency planning" is underway to evacuate Americans from the Middle East in case the Israel-Hamas war spreads into a broad regional conflict.

White House National Security Council spokesman John Kirby stressed there are currently no "active efforts" to evacuate Americans from the region beyond charter flights the U.S government began operating earlier this month out of Israel.

The leader of Hezbollah, Sayyed Hassan Nasrallah, held talks on Wednesday with senior Hamas and Palestinian Islamic Jihad figures in a key meeting of three top anti-Israel militant groups amid the war raging in Gaza.

A brief statement following the meeting said that Hezbollah's leader agreed with Hamas' Saleh al-Arouri and Islamic Jihad's leader Ziad al-Nakhleh on the next steps that the three — along with other Iran-backed militants — should take at this "sensitive stage."

Eleven Hezbollah fighters have been killed in the past 24 hours, as Israel and Hezbollah exchanged fire along the border.

An Israeli drone fired Wednesday two missiles at the outskirts of Kfarshouba as Hezbollah targeted the Branit barracks and another Israeli post facing Naqoura.

Saudi Arabia has evacuated the families of diplomatic staff because of ongoing clashes between Hezbollah militants and Israeli troops.

The Saudi move comes amid rising tensions along the Lebanon-Israel border, where Hezbollah members have been exchanging fire with Israeli troops daily for two weeks.

Tensions from the war in Gaza could help accelerate the move away from planet-warming fossil fuels like oil and gas and toward renewable energy, electric cars and heat pumps — similar to how sharp increases in the price of oil during the 1970s unleashed efforts to conserve fuel, the head of the International Energy Agency said.

"Today we are again facing a crisis in the Middle East that could once again shock oil markets," said IEA Executive Director Fatih Birol. That comes on top of the stress on energy markets from Russia's cutoff of natural gas to Europe over its invasion of Ukraine, he said.