Efforts to secure a ceasefire between Israel and the militant Hamas movement have intensified as the death toll in the 18-day-old conflict continues to climb.
More than 800 Palestinians have now been killed, as well as 34 Israelis.
Gaza faced more Israeli shelling and air strikes overnight, while Israeli towns raised the alarm over Hamas rockets Friday morning.
United States Secretary of State John Kerry is expected to discuss with Israel’s security cabinet.
In the latest incident to incite tensions, a shelling of an United Nations-run school shelter on Thursday left at least 15 people dead.
The deaths prompted outrage from Palestinians and from the UN, with Secretary General Ban Ki-moon calling it “totally unacceptable”.
Meanwhile, Qassam Brigades, Hamas’ military wing, has announced it shelled Tel Aviv’s Ben Gurion airport with three rockets, the second attack in a week on the Israel’s main international airport.
An Israeli military spokesperson confirmed that rockets were fired towards the airport from the Gaza Strip today.
As overnight air strikes in southern Gaza killed more than 30 members of two families in Khan Younis and Rafah the UN Security Council has called for an immediate ceasefire between Israel and Palestinian militants in Gaza.
Sunday’s late-night UN Security Council session was convened at the request of Jordan, which is understood to have proposed a strongly worded draft resolution for consideration.
It comes as US Secretary of State John Kerry heads to Cairo for talks on the crisis amid a mounting death toll.
More than 500 Palestinians, mainly civilians, have been killed since the Israeli offensive began 13 days ago, Gaza’s health ministry says.
Sunday (July 20) was the deadliest day since the start of Israel’s offensive, with 13 Israeli soldiers and more than 100 Palestinians killed.
Israel says it has killed at least 120 militants since Thursday night when it launched a ground offensive, the second phase of a military operation that began on 8 July.
South Sudanese rebels have launched an offensive to retake a key town near the border with Ethiopia in what the United Nations said was a clear violation of a truce agreement.
The UN mission said in a statement that the attack was a resumption of hostilities, since President Salva Kiir and his former deputy, rebel leader Riek Machar, met in May and recommitted to a January ceasefire.
UNMISS, the UN mission, laid the blame for the truce violation squarely with Machar’s forces.
But a spokesman for Machar’s forces, Lul Kuang, defended their moves as an act of “self-defence” after what he described as several government attempts to arrest their military commander.
South Sudanese army spokesman Philip Aguer denied that a town Nasir had fallen, describing fighting as ongoing; adding that the armed forces had staged nine offensives on Nasir.
Only days earlier, mediators had pressed the rival sides to resume peace talks being held in Ethiopia, or face increased sanctions.