For three weeks, Israel has been bombing the Gaza Strip as part of its war with Hamas.
The two sides have published conflicting accounts of the toll taken by the airstrikes. Satellite data gives us an independent view.
Every 12 days, NASA’s Sentinel-1 satellite passes three times over the Gaza Strip, firing out radar waves and listening for their echo. Buildings typically bounce the signals right back, but rubble scatters them in all directions.
By comparing signals before the war with those taken more recently, we can estimate the scope and scale of the destruction.
This map shows what Gaza looked like before the war, its population densely clustered in Gaza City, in the far north, and the southern cities of Rafah and Khan Younis.
By 13 October, six days after Hamas launched its attacks in southern Israel, much of Gaza City had been hit by airstrikes.
The satellite data suggests 15% of buildings in northern Gaza were damaged or destroyed in less than a week, along with 2% in southern Gaza.
That same day, Israel ordered all 1.1 million residents of northern Gaza to flee southwards to relative safety.
Since then, however, Israel has stepped up its bombing of the south.
The map below shows the estimated damage to buildings across Gaza on 13 and 25 October, with the most damaged areas highlighted in yellow.
Almost half of all new damage detected between 14 and 25 October was in southern Gaza (47%), up from 14% before the evacuation order.
While there was a decrease in new damage across the Gaza Strip during those two weeks, the level of destruction in southern Gaza increased by 85%.
A spokesperson for the Israeli Defence Forces declined to comment.
Many of those who fled the north after 13 October have ended up in the Gaza Strip’s second most populous city, Khan Younis.
Since then, satellite data shows neighbourhoods across the city have sustained damage.
The video below, uploaded to Snapchat on 24 October, shows smoke rising from behind a school in Khan Younis.
Sky News has verified the location of the footage, and satellite analysis shows that a row of buildings immediately behind the school sustained damage between 14 and 25 October.
The Gaza Strip has been under aerial bombardment since Hamas’s 7 October attack, in which the Israeli government says more than 1,400 were killed.
Israel says that Hamas is still holding more than 200 people hostage inside the enclave. Five British citizens remain missing.
The airstrikes come as Israel prepares to launch an anticipated ground invasion of the Gaza Strip.
According to Gaza’s health ministry, which is controlled by Hamas, more than 6,500 people have been killed in the airstrikes – two-thirds of them women and children.
Sky’s satellite data suggests that one in four buildings in northern Gaza (25%) have been damaged or destroyed in the past three weeks, along with 8% of those in the south.
The Rimal neighbourhood of Gaza City has been hit particularly hard.
This video below, uploaded to Snapchat on 20 October and verified by Sky News, shows the local high street in ruins.
From the satellite analysis, we can see that the video shows just a small part of the destruction in Rimal.
Sky’s analysis of satellite data followed a method developed by academics and promoted by NASA.
This is a conservative estimate – Sky News has only classified an area as damaged if the satellite records at least a 30% decrease in surface smoothness over a 1,600 square metre area.
Damage to a single building, or even its total destruction, is unlikely to reach that threshold. Damage to the side of buildings may not be detected at all.
The Gaza Ministry of Public Works says that 27,781 housing units, or around 7% of the total, have been destroyed or rendered uninhabitable since 7 October.
Additional reporting by Sanya Burgess
The Data and Forensics team is a multi-skilled unit dedicated to providing transparent journalism from Sky News. We gather, analyse and visualise data to tell data-driven stories. We combine traditional reporting skills with advanced analysis of satellite images, social media and other open source information. Through multimedia storytelling we aim to better explain the world while also showing how our journalism is done.
Representatives of dozens of climate vulnerable islands and African nations have stormed out of high-stakes negotiations over a climate funding goal.
Patience is wearing thin and negotiations have boiled over at the COP29 climate talks in Azerbaijan, which were due to finish yesterday but are now well into overtime.
After two weeks of talks, the more than 190 countries gathered in the capital Baku are still trying to agree a new financial settlement to channel money to poorer countries to both curb and adapt to climate change.
Talks have now run well into overtime at COP29, but a deal now feels much more precarious.
The least developed countries like Mozambique and low-lying island nations like Samoa say their calls for a portion of the fund to be allocated to them have been ignored.
Samoa’s minister of natural resources and environment Toeolesulusulu Cedric Schuster is one of the representatives who walked out.
“We are here to negotiate but we have walked out… at the moment we don’t feel we are being heard in there,” he said on behalf of more than 40 small island and developing states, whose shorelines are being lost to rising sea levels.
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Shortly after he made a veiled threat of leaving COP29 altogether, saying: “We want nothing more than to continue to engage, but the process must be INCLUSIVE.
“If this cannot be the case, it becomes very difficult for us to continue our involvement here at COP29.”
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Evans Njewa, who chairs a group of more than 40 least developed countries, said the current deal is “unacceptable for us. We need to speak to other developing countries and decide what to do.”
The last official draft on Friday pledged $250bn a year annually by 2035.
This is more than double the previous goal of $100bn set 15 years ago, but nowhere near the annual $1.3trn that experts say is needed.
Sky News understands some developed countries like the UK were this morning willing to bump up the goal to $300bn.
Developing countries are angry not just about the finance negotiations, but also on how to make progress on a pledge from last year to “transition away from fossil fuels”.
A group of oil and producing countries, spearheaded by Saudi Arabia, have tried to dilute that language, while the UK and island state are among those that have fought to keep it in.
Mr Schuster said all things being negotiated contain a “deplorable lack of substance”.
He added: “We need to see progress and follow up on the transition away from fossil fuels that we agreed last year. We have been asked to forget all about that at this COP, as though we are not in a critical decade and as though the 1.5C limit is not in peril.”
“We need to be shown the regard which our dire circumstances necessitate.”
This breaking news story is being updated and more details will be published shortly.
At least 11 people have been killed and 63 injured in an Israeli strike on central Beirut, Lebanese authorities have said.
Lebanon‘s health ministry said the death toll could rise as emergency workers dug through the rubble looking for survivors. DNA tests are being used to identify the victims, the ministry added.
State-run National News Agency (NNA) said the attack “completely destroyed” an eight-storey residential building in the Basta neighbourhood early on Saturday.
Footage broadcast by Lebanon’s Al Jadeed station also showed at least one destroyed building and several others badly damaged around it.
The Israeli military did not warn residents to evacuate before the attack – the fourth targeting the centre this week.
At least four bombs were dropped in the attack, security sources told Reuters news agency.
The blasts happened at about 4am (2am UK time).
A seperate drone strike in the southern port cuty of Tyre this morning killed one person and injured another, according to the NNA.
The blasts came after a day of bombardment of Beirut’s southern suburbs and Tyre. The Israeli military had issued evacuation notices prior to those strikes.
Israel has killed several Hezbollah leaders in air strikes on the capital’s southern suburbs.
Heavy fighting between Israel and Hezbollah is ongoing in southern Lebanon, as Israeli forces push deeper into the country since launching a major offensive in September.
US envoy Amos Hochstein was in the region this week to try to end more than 13 months of fighting between Israel and Hezbollah, ignited last October by the war in Gaza.
Mr Hochstein indicated progress had been made after meetings in Beirut on Tuesday and Wednesday, before going to meet Israeli Prime Minister Benjamin Netanyahu and defence minister Israel Katz.
According to the Lebanese health ministry, Israel has killed more than 3,500 people in Lebanon and wounded more than 15,000.
It has displaced about 1.2 million people – a quarter of Lebanon’s population – while Israel says about 90 soldiers and nearly 50 civilians have been killed in northern Israel.
President Vladimir Putin has said Russia will ramp up the production of a new, hypersonic ballistic missile.
In a nationally-televised speech, Mr Putin said the intermediate-range Oreshnik missile was used in an attack on Ukrainian city Dnipro in retaliation for Ukraine’s use of US and British missiles capable of striking deeper into Russian territory.
Referring to the Oreshnik, the Russian president said: “No one in the world has such weapons.
“Sooner or later other leading countries will also get them. We are aware that they are under development.”
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He added: “We have this system now. And this is important.”
Detailing the missile’s alleged capabilities, Mr Putin claimed it is so powerful that using several fitted with conventional warheads in one attack could be as devastating as a strike with nuclear weapons.
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General Sergei Karakayev, head of Russia’s strategic missile forces, said the Oreshnik could reach targets across Europe and be fitted with either nuclear or conventional warheads – while Mr Putin alleged Western air defence systems will not be able to stop the missiles.
Mr Putin said of the Oreshnik: “There is no countermeasure to such a missile, no means of intercepting it, in the world today. And I will emphasise once again that we will continue testing this newest system. It is necessary to establish serial production.”
Testing the Oreshnik will happen “in combat, depending on the situation and the character of security threats created for Russia“, the president added, stating there is “a stockpile of such systems ready for use”.
NATO and Ukraine are expected to hold emergency talks on Tuesday.
Meanwhile Ukraine’s parliament cancelled a session as security was tightened following the strike on Dnipro, a central city with a population of around one million. No fatalities were reported.
EU leaders condemn Russia’s ‘heinous attacks’
Numerous EU leaders have addressed Russia’s escalation of the conflict with Poland’s Prime Minister Donald Tusk saying the war is “entering a decisive phase [and] taking on very dramatic dimensions”.
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Russia’s new missile – what does it mean?
Speaking in Kyiv, Czech foreign minister Jan Lipavsky called Moscow’s strike an “escalatory step and an attempt of the Russian dictator to scare the population of Ukraine and to scare the population of Europe”.
At a news conference, Mr Lipavsky gave his full support for delivering the additional air defence systems needed to protect Ukrainian civilians from the “heinous attacks”.