Israel claims to have the leader of Hamas holed up in his Gaza City bunker.
Yahya Sinwar has led Hamas since 2017, having joined its ranks in the early 1980s.
Believed to be the architect of the 7 October attacks, he is Israel’s most wanted – a “dead man walking”, according to Prime Minister Benjamin Netanyahu, who claims to have him “surrounded and isolated”.
He has spent more than 20 years in prison for killing both Israelis and fellow Palestinians suspected of collaborating with the other side.
The 61-year-old’s nicknames include “the face of evil”, “butcher of Khan Younis”, and “man of 12” – in reference to 12 suspected informers he is believed to have killed.
Granted fatwa by Hamas founder to kill collaborators
Sinwar was born in a refugee camp in Khan Younis, southern Gaza, in 1962.
He studied Arabic at the Islamic University of Gaza, which was founded in 1978 by the two men who went on to set up Hamas almost a decade later.
There he became particularly close to one of them, the cleric Sheikh Ahmed Yassin.
Yassin and Mahmoud al-Zahar co-founded Hamas in 1987 as a Gaza-based political splinter group of the Muslim Brotherhood.
According to Israeli reports, Sinwar said Yassin granted him a fatwa (a ruling in Islamic law) to kill anyone suspected of collaborating with the Israelis.
He was first arrested for subversive activities in 1982. In prison, he met other key members of Hamas, including Salah Shehade, the former leader of its military wing the Qassam Brigades.
After being arrested and imprisoned again in 1985, he was put in charge of Hamas’s internal security branch, the Majd Force, which sought out and killed suspected Israeli spies.
Dr Ahron Bregman, a former Israeli army major – and now senior teaching fellow in war studies and the Arab-Israeli conflict at King’s College London, said: “The Israelis tried for many years to recruit him as a collaborator himself, offering him massive incentives.
“But it never worked with Sinwar. In fact he became notorious for killing Palestinians suspected of collaborating.”
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2:01
Analysed: Hamas leader Yahya Sinwar ‘surrounded in his bunker’
Learnt fluent Hebrew in prison
In 1988 he helped abduct and kill two Israeli Defence Force soldiers, which saw him sentenced to 22 years in an Israeli prison.
Despite being incarcerated, Sinwar used the time to his advantage – learning fluent Hebrew to better understand his enemy and ascending to become leader of Hamas prisoners in Israel.
Dr Bregman says: “He would read Israeli newspapers on a daily basis. He understood them way better than they understood him – hence his ability to deceive them and catch them off guard by executing his military operation so effectively in October 2023.”
Fifteen years into his prison sentence, he went on Israeli television and spoke in Hebrew, calling for a truce with Hamas.
He was released in 2011 as part of the swap of more than 1,000 Palestinian prisoners for just one hostage Israeli soldier – Gilad Shalit.
Commenting on his imprisonment afterwards, Sinwar said: “They wanted the prison to be a grave for us. A mill to grind our will, determination and bodies.
“But thank God, with our belief in our cause we turned the prison into sanctuaries of worship and academies for study.”
Forced suspected informer to bury his own brother
Back in Gaza he continued to increase his influence among Hamas’s highest ranks.
He remained committed to his original task of unmasking and killing traitors – both Israeli collaborators and members of rival militant groups.
A former member of Israeli intelligence told the Financial Times that he once boasted about forcing a Hamas member suspected of informing for a competing faction to “bury his own brother alive… handing him a spoon to finish the job”.
In 2015 he is thought to have been involved in the torture and killing of fellow Hamas commander Mahmoud Ishtiwi.
He was accused of embezzlement and “moral crimes”, including alleged homosexual activity, with Sinwar thought to have orchestrated his murder over fears he could compromise the group.
Commenting on how he killed another collaborator, he told how he and a group of others blindfolded Ishitiwi and drove him to a makeshift grave, before strangling him with a kaffiyeh (Arabic male headdress) and burying him there.
The same year he is thought to have killed Ishtiwi, he was designated a terrorist by the US government.
He replaced Ismail Haniyeh as Hamas leader in early 2017 and was re-elected in 2021, later surviving an assassination attempt.
As leader he has increased the group’s use of force, stepping up protests and rocket fire at the Israeli border.
With his military background, he is seen as someone capable of uniting Hamas’s armed and political wings.
Dr Bregman describes him as a “man of few words” and a “natural leader… charismatic, secretive and manipulative”.
“He will be remembered as the architect of the 7 October attacks and the person who inflicted on the Israelis their most terrible disaster since the establishment of their state in 1948,” he adds.
Although his methods have been “barbaric”, Dr Bregman believes it will be seen, “from a Palestinian point of view, in spite of the terrible price they are paying now, as a great victory”.
“Sinwar has earned a place in the pantheon of great Palestinian leaders,” he adds.
Testimonies from people on the ground in Gaza, however, suggest his violent methods have left many of them disillusioned with Hamas.
With Israel’s promise to destroy Hamas and all of its leaders, Dr Bregman believes they will “get him in the end”.
But before then he could be offered safe passage to another country as part of political deal, as former Palestinian Liberation Organisation (PLO) leader Yasser Arafat was to Tunisia in 1982.
“Whatever his fate, there is no doubt Sinwar will go down in Palestinian history as a mythical figure,” Dr Bregan says.
Joe Biden has authorised Ukraine to begin firing US-supplied rockets deep into Russia – as Sir Keir Starmer prepares to push for “further support” for Kyiv at the G20 summit.
Mr Biden’s policy shift means Kyiv will now be able to use Army Tactical Missile Systems (ATACMS)for long-range attacks, two American officials have told Sky News’ US partner network NBC News.
Ukraine plans to conduct its first such attacks in the coming days, the sources said, without revealing details due to operational security concerns.
A Russian politician and the son of president-elect Donald Trumphave both likened the move to risking a third world war.
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Maria Butina told the Reuters news agency: “These guys, Biden’s administration, is trying to escalate the situation to the maximum while they still have power and are still in office.
“I have a great hope that Trump will overcome this decision if this has been made because they are seriously risking the start of World War Three which is not in anybody’s interest.”
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Meanwhile, Donald Trump Jr wrote on X: “The Military Industrial Complex seems to want to make sure they get World War 3 going before my father has a chance to create peace and save lives… Imbeciles!”
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The outgoing Biden administration’s move comes as there are concerns about the level of support the Trump White House may be willing to give Ukraine.
Mr Trump has previously vowed to limit US support for Ukraine and end its war with Russia.
In an evening address after Kyiv was given permission to fire deep into Russia, Ukrainian President Volodymyr Zelenskyy said: “Today, there’s a lot of talk in the media about us receiving permission for respective actions. But strikes are not carried out with words. Such things are not announced. Missiles will speak for themselves. They certainly will.”
Back in September, Russian President Vladimir Putin said if the US were to lift the ban on long-range missile use it would be seen as NATO’s “direct participation” in the war.
He added: “This, of course, will significantly change the very essence, the very nature of the conflict.”
Meanwhile, the UK prime minister has said he has “no plans” to speak with the Russian president as world leaders gather for the G20 summit in Rio de Janeiro.
Mr Putin will not be attending the two-day summit which starts on Monday after saying in October that his presence would “disrupt the normal work of this forum”. Russia’s foreign minister Sergei Lavrov will be attending instead.
It will take place days after German Chancellor Olaf Scholz spoke to Mr Putinon what was the Russian leader’s first publicly announced conversation with the sitting head of a major Western power in nearly two years.
Asked if he had any plans to make a similar call, Sir Keir said: “It’s a matter for Chancellor Scholz who he speaks to. I have no plans to speak to Putin.”
Speaking to reporters while on his way to the summit, he added: “We are coming up to the 1,000th day of this conflict on Tuesday.
“That’s 1,000 days of Russian aggression, 1,000 days of huge impact and sacrifice in relation to the Ukrainian people and recently we’ve seen the addition of North Korean troops working with Russians which does have serious implications.
“I think on one hand it shows the desperation of Russia, but it’s got serious implications for European security […] and for Indo-Pacific security and that’s why I think we need to double down on shoring up our support for Ukraine and that’s top of my agenda for the G20.
“There’s got to be full support as long as it takes and that certainly is top of my agenda, shoring up that further support for Ukraine.”
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One of Russia’s ‘largest air attacks’
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The latest developments come after Russia launched a large-scale attack on Ukraine on Sunday, with Mr Zelenskyy claiming Moscow had launched a total of 120 missiles and 90 drones.
Two major strikes, which left a total of 18 people dead, hit a residential building in the northeastern city of Sumy as well as energy infrastructure across Ukraine, prompting emergency power cuts.
Hours later, Moscow mayor Sergei Sobyanin said Russia’s air defence units had destroyed a drone heading towards the city.
Joe Biden has authorised Ukraine to begin firing US-supplied rockets deep into Russia – as Sir Keir Starmer prepares to push for “further support” for Kyiv at the G20 summit.
Mr Biden’s policy shift means Kyiv will now be able to use Army Tactical Missile Systems (ATACMS)for long-range attacks, two American officials have told Sky News’ US partner network NBC News.
Ukraine plans to conduct its first such attacks in the coming days, the sources said, without revealing details due to operational security concerns.
The son of president-elect Donald Trumphas criticised the move to allow Ukraine to fire deep into Russia.
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Donald Trump Jr wrote on the X social media platform: “The Military Industrial Complex seems to want to make sure they get World War 3 going before my father has a chance to create peace and save lives… Imbeciles!”
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The outgoing Biden administration’s move comes as there are concerns about the level of support the Trump White House may be willing to give Ukraine.
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Mr Trump has previously vowed to limit US support for Ukraine and end its war with Russia.
In an evening address after Kyiv was given permission to fire deep into Russia, Ukrainian President Volodymyr Zelenskyy said: “Today, there’s a lot of talk in the media about us receiving permission for respective actions. But strikes are not carried out with words. Such things are not announced. Missiles will speak for themselves. They certainly will.”
Back in September, Russian President Vladimir Putin said if the US were to lift the ban on long-range missile use it would be seen as NATO’s “direct participation” in the war.
He added: “This, of course, will significantly change the very essence, the very nature of the conflict.”
Meanwhile, the UK prime minister has said he has “no plans” to speak with the Russian president as world leaders gather for the G20 summit in Rio de Janeiro.
Mr Putin will not be attending the two-day summit which starts on Monday after saying in October that his presence would “disrupt the normal work of this forum”. Russia’s foreign minister Sergei Lavrov will be attending instead.
It will take place days after German Chancellor Olaf Scholz spoke to Mr Putinon what was the Russian leader’s first publicly announced conversation with the sitting head of a major Western power in nearly two years.
Asked if he had any plans to make a similar call, Sir Keir said: “It’s a matter for Chancellor Scholz who he speaks to. I have no plans to speak to Putin.”
Speaking to reporters while on his way to the summit, he added: “We are coming up to the 1,000th day of this conflict on Tuesday.
“That’s 1,000 days of Russian aggression, 1,000 days of huge impact and sacrifice in relation to the Ukrainian people and recently we’ve seen the addition of North Korean troops working with Russians which does have serious implications.
“I think on one hand it shows the desperation of Russia, but it’s got serious implications for European security […] and for Indo-Pacific security and that’s why I think we need to double down on shoring up our support for Ukraine and that’s top of my agenda for the G20.
“There’s got to be full support as long as it takes and that certainly is top of my agenda, shoring up that further support for Ukraine.”
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2:01
One of Russia’s ‘largest air attacks’
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Keep up with all the latest news from the UK and around the world by following Sky News
The latest developments come after Russia launched a large-scale attack on Ukraine on Sunday, with Mr Zelenskyy claiming Moscow had launched a total of 120 missiles and 90 drones.
The sweeping attack, which left at least eight people dead, targeted energy infrastructure across Ukraine overnight and prompted emergency power cuts.
Hours later, Moscow mayor Sergei Sobyanin said Russia’s air defence units had destroyed a drone heading towards the city.
Joe Biden’s belated decision to allow Ukraine to use US-supplied, long-range missiles inside Russia will be cheered by Kyiv and will almost certainly prompt the UK to follow suit.
But the stunning shift in US policy – just weeks before Donald Trump takes over as US president – will also trigger fury and fresh threats from Moscow at a time of increasing uncertainty about the future course of its war.
President Vladimir Putin has warned the West they would be playing with fire if they allowed Ukrainian forces to launch Western-supplied cruise and ballistic missiles at Russia, saying it could even trigger a global conflict.
British and US officials, though, have repeatedly advised their respective capitals not to be intimidated by Moscow’s sabre rattling.
Yet there has been hesitancy, particularly in Washington, over the unleashing of US Army Tactical Missile System (ATACMS) ballistic missiles beyond the borders of Ukraine.
However, it seems that a move by North Korea to send thousands of its troops to fight with Russia has changed US calculations.
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The New York Times, which was among the US media organisations to break news of the Biden administration’s decision on long-range missiles, reported that the first time the American weapons will be used inside Russia will likely be against Russian and North Korean troops battling a Ukrainian incursion in the Russian region of Kursk.
While a significant step up in support for Ukraine, the ability to use American long-range missiles inside Russia is not a war-winning development.
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But it does expand Kyiv’s capacity to hit important military targets deliberately positioned by Russian commanders far back from the frontline. This includes stockpiles of missiles, drones and other ammunition used to strike Ukraine.
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2:59
Biden lifts ban on Russia strikes
Just as important as the military impact, though, is the political signal that the US decision sends to the Kremlin about Washington’s willingness to defy Russian warnings about dire consequences should Mr Biden dare to grant Ukraine the permission it’s so long been seeking.
The dramatic move by the United States comes after months of lobbying by Ukraine’s leader, Volodymyr Zelenskyy.
A key thing to watch now will be how Mr Putin reacts the first time an American missile kills Russian soldiers on Russian soil.
Moscow does not want a direct war with the United States and NATO – nuclear-armed forces with far greater combined firepower – but the Kremlin could well ramp up an already heightened campaign of sabotage and other forms of hybrid warfare across Europe.
Another important reaction to track will be how Mr Trump responds to Mr Biden’s move and whether he continues to allow Ukraine this permission once he takes over as the US commander-in-chief.
The president-elect has vowed to end Russia’s war in Ukraine quickly but he has not said how. Yet he has voiced fierce opposition to the continued gifting of vast quantities of American weapons to the Ukrainian military.