Joe Biden has said the world must stand up to Russia’s “naked aggression” and support the people of Ukraine.
Speaking to the UN General Assembly, he said Moscow alone bears responsibility for the war, stands in the way of peace, and has the power to end the conflict immediately.
The US president urged UN members to continue supporting Ukraine – as failure to do so will allow Russia to brutalise the country without compromise.
Mr Biden said: “If we allow Ukraine to be carved up, is the independence of any nation secure? I respectfully suggest the answer is no – we have to stand up to this naked aggression today and deter the would-be aggressors of tomorrow.”
He vowed that the US “will continue to stand with the brave people of Ukraine as they defend their sovereignty, territorial integrity and freedom”.
The president’s remarks attracted applause from UN delegates – including his Ukrainian counterpart Volodymyr Zelenskyy, who was in the audience.
Earlier on Tuesday, UN Secretary-General Antonio Guterres had warned Russia’s invasion “has unleashed a nexus of horror”.
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But back in Washington, Mr Biden has faced criticism from Republicans who want the US to spend less money on the war effort – with Donald Trump vowing to seek a quick end to the conflict if he is re-elected in the 2024 presidential election.
In a wide-ranging speech, Mr Biden warned the world is at an “inflection point in history” – and no nation can meet the challenges of today alone.
“Our future is bound to yours,” he said.
One area of focus was climate change – with the US president telling delegates it is “critical” to decelerate the crisis.
“We see it everywhere – record-breaking heatwaves in the US and China, wildfires ravaging North America and southern Europe, a fifth year of drought in the Horn of Africa,” he said.
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Furious crowds call for justice in Libya
Mr Biden also pointed to “tragic, tragic” flooding in Libya that has killed thousands of people – and said his heart goes out to those who have been displaced.
“Together, these snapshots tell an urgent story of what awaits us if we fail to reduce our dependence on fossil fuels and begin to climate-proof the world,” he added.
The US president went on to say that his administration has treated the climate crisis as an existential threat from the day he took office – “not only for us, but for all of humanity”.
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Is AI an existential threat?
On China and artificial intelligence
Mr Biden also told the UN General Assembly in New York that “AI holds enormous potential and enormous peril” – and the world needs to ensure they are used as “tools of opportunity, not weapons of oppression”.
He added: “The US is working to strengthen rules and policies so AI technologies are safe before they’re released to the public.”
The president said world leaders need to make sure they are governing this technology, rather than the other way around.
And on China, Mr Biden stressed he wants to responsibly manage competition between both countries to prevent tensions from tipping over into conflict.
“We are for derisking, not decoupling with China,” he said. “We will push back on aggression and intimidation and protect the rules of the road. We also stand ready to work together with China where progress hinges on our common efforts.”
White House press secretary Karoline Leavitt has said Donald Trump will make a decision on whether to militarily strike Iran in the next two weeks. That’s as diplomatic talks between Western governments and the Iranians ramp up.
In today’s episode, US correspondents Mark Stone and Martha Kelner unpick why the delay might be, and the competing voices in the ears of the president.
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This is the most significant statement from the US president in days, though it still keeps everyone guessing.
In a message conveyed through his press secretary, he is giving diplomacy up to two weeks to work.
“Based on the fact that there’s a substantial chance of negotiations that may or may not take place with Iran in the near future, I will make my decision whether or not to go within the next two weeks,” Karoline Leavitt quoted him as saying.
It is not clear what “whether or not to go” entails.
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Trump: Iran ‘weeks away’ from nuclear weapon
We know that he has been given a spectrum of different military options by his generals and we know that the Israelis are pressuring him to use American B2 bombers with their bunker-busting bombs to destroy Iran’s nuclear facility at Fodow.
The Israelis are encouraging no delay. But against that, he is weighing up many risks, both military and political.
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Militarily, it is not clear how successful a bunker-busting strike on Fordow would be.
Experts have suggested it would require several of the massive bombs, which have never been used in combat before, to be dropped on the site.
It is not as simple as one clean strike and job done.
Politically, the president is under significant pressure domestically not to get involved in Iran.
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MAGA civil war breaks out over Iran
Within his own MAGA coalition – influencers, politicians and media personalities are lining up in criticism of involvement in the conflict.
One of those leading the criticism, his former chief strategist Steve Bannon, who maintains huge influence, was seen entering the White House on Thursday.
His press secretary reiterated to us that the president always wants to give diplomacy a chance and she confirmed that his Middle East envoy Steve Witkoff has spoken to the Iranian foreign minister Abbas Araghchi.
Image: Steve Bannon, seen recently at a conservative event in Maryland, is against US involvement in Iran. Pic: AP
European leaders, including the UK foreign secretary David Lammy, who is in Washington, are meeting Mr Araghchi in Geneva on Friday.
The two-week window – assuming it lasts that long – also gives space to better prepare for any strike and mitigate against some of the other risks of US involvement.
There are 40,000 troops in bases across the Middle East. It takes time to increase security at these bases or to move non-essential personnel out. It also takes time to move strategic military assets into the region.
The USS Nimitz aircraft carrier and its support vessels were redeployed from the Indo-Pacific on Monday. Their last known position was the Strait of Malacca two days ago.
The Nimitz Carrier Group will overlap with the USS Carl Vinson group which was deployed to the Middle East in March.
The potential two-week window also allows for more time for a ‘day after’ plan, given that the Israeli strategy appears to be regime change from within.
Since the Israeli action in Iran began last week, the worst-case scenario of mass casualties in Israel from Iranian attacks has not materialised.
The president is said to be surprised and encouraged by this. “Israel has exceeded a lot of people’s expectations in their abilities,” press secretary Karoline Leavitt said.
The Israeli success, the absence of a mass casualty event in Israel, and the lack of any sustained counterattack by Iranian proxies in the region remove reservations that previous presidents have had about taking on Iran.
That said, sources have told Sky News that the president is determined that the diplomatic solution should be given a chance despite current pessimism over the chances of success.
A SpaceX rocket has exploded before launch – sending a dramatic fireball high into the sky.
Starship 36 was preparing for its 10th test flight at Starbase – SpaceX’slaunch site at the southern tip of Texas – when the incident occurred on Wednesday evening.
During take off procedures just after 11pm local time, the rocket exploded into a giant fireball.
The company described the incident as a “major anomaly”.
Image: Starship 36 was preparing for its 10th test flight. Pic: NASASpaceFlight
Image: The test flight failed at Starbase – SpaceX’s launch site. Pic: NASASpaceFlight
In a statement, it added: “A safety clear area around the site was maintained throughout the operation and all personnel are safe and accounted for.
“Our Starbase team is actively working to safe the test site and the immediate surrounding area in conjunction with local officials.
“There are no hazards to residents in surrounding communities, and we ask that individuals do not attempt to approach the area while safing operations continue.”
It marks the latest failure for the space flight company, which hopes that Starship will one day be used to ferry people and cargo to Mars.
Last month, a Starship test flight began spinning out of control about 30 minutes after its launch because of fuel leaks – meaning it broke up on re-entry into the Earth’s atmosphere.
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May: SpaceX rocket spins out of control
That followed explosive past failures in January, where a rocket blew up about eight minutes after take-off, and March, which forced flights in Florida to be temporarily grounded.
SpaceX CEO Elon Musk said in May that despite the rocket failure, the test flight was a “big improvement”.
A day later, he said he wants to send a spacecraft crewed by humanoid robots on a voyage to Mars by the end of 2026.