More than 63,000 Palestinians have now reportedly been killed during Israel’s war in Gaza, a figure likely to rise after the IDF declared Gaza City a combat zone on Friday.

The number of people killed, reported by the Hamas-run Gaza health ministry, follows nearly 23 months of war.

Israeli Prime Minister Benjamin Netanyahu has been pushing ahead with his plan to militarily occupy the Gaza Strip, starting with Gaza City, with the goal of destroying Hamas and returning the remaining Israeli hostages.

Israel on Friday claimed the city was a Hamas stronghold and alleged that a network of tunnels remains in use despite several previous large-scale raids on the area.

Israeli army spokesperson Avichay Adraee urged Palestinians to flee south, calling evacuation of the city “inevitable”.

But the head of the Red Cross warned it would be impossible to keep people safe during such a mass evacuation.

Many people in Gaza City would not be able to follow evacuation orders because they are starving, sick or injured, Mirjana Spoljaric said.

International humanitarian law requires Israel to ensure civilians have access to shelter, safety and nutrition,
when evacuation orders are issued.

“These conditions cannot currently be met in Gaza. This makes any evacuation not only unfeasible but incomprehensible under the present circumstances,” Ms Spoljaric added.

Meanwhile, the Israel Defense Forces (IDF) announced it had targeted Abu Obeida, a spokesperson for Hamas’s armed wing, in a strike on Gaza City, according to Israeli media.

And Mr Netanyahu later said the body of hostage Idan Shtivi was retrieved from Gaza.

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Four people were killed by Israeli gunfire on Saturday while trying to get aid in central Gaza, according to health officials at Awda hospital, where the bodies were brought.

Their deaths join the almost 1,900 people who the UN say have been killed while seeking food since 27 May, including more than 1,000 killed in the vicinity of the controversial Gaza Humanitarian Foundation sites.

“Most of these killings appear to have been committed by the Israeli military,” a spokesperson for the UN High Commissioner for Human Rights Thameen Al-Kheetan said.

Israel has previously blamed Hamas militants for fomenting chaos and endangering civilians at aid sites.

The conflict began with a Hamas-led attack on Israel on 7 October 2023, which saw around 1,200 people killed and about 250 people taken hostage.

Greta Thunberg has rejected accusations of antisemitism as she embarks on her second flotilla to Gaza.

The 22-year-old and other activists are setting sail on the largest flotilla to Gaza on Sunday, despite having been detained by Israeli forces and deported when they approached on a British-flagged yacht in June.

Israel later accused the group of activists of being antisemitic – an accusation Thunberg told Sky News’ Europe correspondent Siobhan Robbins she rejects.

“It is not antisemitic to say that we should not be bombing people, that one should not be living in occupation, that everyone should have the right to live in freedom and dignity, no matter who you are,” she said.

Before the dozens of boats carrying aid embarks from Spain, the activists called on governments to pressure Israel to allow their flotilla through the naval blockade.

Israel imposed the blockade on Gaza after Hamas took control of the coastal enclave in 2007 and has blocked numerous attempts to reach Gaza since, including a vessel in 2010 by its special forces in which at least nine Turkish activists were killed.

But Thunberg brushed concerns about the dangers of the trip aside, saying she was instead worried about the “silence of the world” in light of what is happening in Gaza.

“I’m terrified to see that we seem to have lost all the humanity that we have, and there seems to be no compassion left in the world amongst the vast majority of people who are able to sit on the couch and watch the genocide unfold that I am terrified for,” she added.

Israel has repeatedly denied claims of genocide and previously described the first ship, Madleen, as “the selfie yacht”, dismissing the aid ship as a propaganda stunt in support of Hamas.

In a statement to Sky News, the Israel Defence Forces (IDF) said: “The IDF enforces the security naval blockade on the Gaza Strip and is prepared for a wide range of scenarios, which it will act upon in accordance with the directives of the political echelon.”

Thunberg said: “It’s important that by doing so, by continuing this blockade, Israel is violating international law. And what we are trying to do is to use our rights to sail on international waters and to deliver humanitarian aid, which Israel is not allowed to block from coming in.”

The naval blockade has remained in place through conflicts, including the current war, which began when Hamas fighters attacked southern Israel on 7 October 2023, killing more than 1,200 people and taking 251 hostages.

Israel’s retaliatory offensive against Hamas has since killed almost 63,000 Palestinians, according to the Hamas-run Gaza health ministry, while part of the Strip is suffering from famine, according to a global hunger monitor – something Israel denies.

In March, Israel also sealed off Gaza by land, not letting in supplies for three months, claiming Hamas was diverting aid.

Asked what would be her message to Hamas, which is still holding 48 hostages in Gaza, around 20 of whom Israel still believes to be alive, Thunberg said she does “not stand behind killing civilians”.

“But we translate that into reality and we’re seeing how many hundreds of thousands of people are dying in Gaza now, how many hundreds of thousands of people have been deprived [of] their dignity and justice and freedom by Israel,” she added.

The IDF said in its statement: “Israel allows and facilitates the entry of humanitarian aid into the Gaza Strip. Since the beginning of the war, over two million tons of aid have been delivered to Gaza – approximately one ton of aid per person on average.

“The last few months 9,000 aid trucks have entered through land crossings, as publicly reported.

“In recent weeks, approximately 300 aid trucks have entered daily, primarily carrying food, medical supplies, hygiene products, and other essential items according to needs identified by international organisations and the UN. Israel does not impose quantitative limits on aid trucks entering Gaza.

“Several significant measures have been implemented to expand aid volume and facilitate collection by the UN and international organisations. Recent data on aid deliveries demonstrates Israel’s commitment to facilitating humanitarian assistance to Gaza.”

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Thunberg, who is among hundreds of people from 44 countries on the flotilla, hopes their mission will bring symbolic aid and help open up a humanitarian corridor to deliver more aid.

She said the activists’ goal is to send “hope and solidarity to the people of Gaza, showing a clear signal that the world has not forgotten about you”.

The Brazilian hosts of the biggest climate meeting of the year have implored businesses to attend in November, amid concerns some are backing away from the climate agenda into the shadow of Donald Trump.

In an interview with Sky News, Ana Toni, chief executive of the COP30 climate summit in November, admitted some companies were having “second thoughts” about the global switch to green economies because policymakers were creating uncertainty.

The US President Donald Trump has been attacking wind farms and waging tariff wars that could slow the transition to green energy.

Banks including HSBC and Barclays have ditched a net zero alliance set up just four years ago by Mark Carney, now the Canadian Prime Minister.

But even before Trump took office, tech companies were quietly dropping climate targets to prioritise energy-hungry AI, and other businesses were “greenhushing” their climate initiatives for fear of backlash.

In this environment, there are fears fewer business leaders will attend the annual talks, which are also being hosted in a city on the edge of the Amazon that hasn’t enough hotel rooms.

On Friday, the COP30 team wrote to business leaders urging them to “step forward, not back” and travel to Belem, despite “logistical challenges” and the “background of systemic uncertainty”.

Ana Toni told Sky News: “We are very concerned that the enabling conditions must be there so that the private sector can also deliver where they do best, which is bringing in technology, bringing innovation and accelerating the process of decarbonisation.”

In August the share price of Danish wind farm developer plummeted after the US halted its Rhode Island wind farm, while the British Tories and Reform parties are also attacking net zero.

But Ms Toni there is “nothing to panic [about], because we can see that the transition is inevitable,” citing major progress in China, India and Europe and Brazil.

Referring to the US’s withdrawal from the COP process, she said: “198 countries minus one is not zero. And we will put all our efforts of working with the 197 countries that want to go forward and want to protect their population.”

“Climate action is not only [still] cool, it is necessary,” Ms Toni said.

“We all need to face reality. We are going through a huge climate crisis… If you’re not part of the solution, you’re part of the problem. Companies understand that.”