Iran warned Saturday of the threat of an "uncontrollable explosion" of the situation in the Middle East, after the United States vetoed a U.N. Security Council resolution calling for a ceasefire in the Gaza war.

Hossein Amir-Abdollahian, the top diplomat of the Islamic republic, also appealed for the immediate opening of the Rafah border crossing with Egypt to enable humanitarian aid to be sent into the Gaza Strip.

Israeli warplanes struck parts of the Gaza Strip overnight into Saturday in relentless bombardments, including some of the dwindling slivers of land Palestinians had been told to evacuate to in the territory's south.

The latest strikes came a day after the United States vetoed a United Nations resolution demanding an immediate humanitarian cease-fire in Gaza, despite it being backed by the vast majority of Security Council members and many other nations. The vote in the 15-member council was 13-1, with the United Kingdom abstaining.

The United States has vetoed a United Nations resolution backed by almost all other Security Council members and dozens of other nations demanding an immediate humanitarian cease-fire in Gaza. Supporters called it a terrible day and warned of more civilian deaths and destruction as the war goes into its third month.

The vote in the 15-member council was 13-1, with the United Kingdom abstaining. The United States' isolated stand reflected a growing fracture between Washington and some of its closest allies over Israel's monthslong bombardment of Gaza. France and Japan were among those supporting the call for a cease-fire.

Four pro-Hezbollah fighters were killed on Friday in an Israeli drone strike on their car in the south of Syria, a war monitor said.

The four fighters "working on behalf of Hezbollah" were killed in Madinat al-Baath town in the province of Quneitra, close to the Israeli-annexed Golan Heights, the Syrian Observatory for Human Rights head Rami Abdel Rahman told AFP.

According to three officials in Tel Aviv who spoke to U.S. news portal POLITICO on condition of anonymity, the administration of United States President Joe Biden has now given Israel until the end of the year to wrap up its war on Hamas.

Egypt is gearing up this month for a presidential election certain to win incumbent Abdel Fattah al-Sisi a third term in office, despite rising public discontent as the country faces its worst ever economic crisis.

From Sunday through Tuesday, Egyptians aged 18 and above will be able to cast their ballots for one of four candidates -- former army chief Sisi, in power since he deposed elected Islamist president Mohamed Morsi in 2013, and three other relative unknowns.

The Palestinian poet Refaat Alareer, one of the leaders of a young generation of authors in Gaza who chose to write in English to tell their stories, was killed in an Israeli strike, his friends said overnight Thursday.

"My heart is broken, my friend and colleague Refaat Alareer was killed with his family a few minutes ago," wrote his friend, the Gazan poet Mosab Abu Toha, on Facebook.

Israeli forces shot dead six Palestinians Friday in a raid on a refugee camp in the occupied West Bank, the Palestinian health ministry said, as the army confirmed it conducted a "counter-terrorism" operation.

The ministry said those who lost their lives included a 14-year-old boy and an 18-year-old. It said they had been killed "by bullets from the occupation (Israel) in the Al-Fara refugee camp" near Tubas.

Responding to increased attacks on ships in the southern Red Sea by Iranian-backed Houthi rebels, the U.S. announced sanctions against 13 people and firms alleged to be providing tens of millions of dollars from the sale and shipment of Iranian commodities to the Houthis in Yemen.

The White House also announced Thursday that it was encouraging allies to join the Combined Maritime Forces, a 39-member partnership that exists to counter malign action by non-state actors in international waters, as it looks to push back against the Houthis. The State Department and Pentagon are leading the effort to expand the maritime partnership after three commercial vessels were struck by missiles fired by Iranian-back Houthis in Yemen earlier this week.

A leading organization representing journalists worldwide expressed deep concern Friday at the number of media professionals killed around the globe doing their jobs in 2023, with Israel's war with Hamas claiming more journalists than any conflict in over 30 years.

In its annual count of media worker deaths, the International Federation of Journalists said 94 journalists had been killed so far this year and almost 400 others had been imprisoned.