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It's been quite a ride.

After eight months documenting an incredible transition of power, and perhaps an even more incredible shift in how power is wielded, we are retiring our US election blog.

In September last year we launched this live page to cover a campaign that had already seen an assassination attempt and a sitting president chivvied (by his own side) from the race.

Our round-the-clock coverage led you through the debates and the build-up, with our data and forensics team scrutinising the polls as it became clear Donald Trump looked on course for a historic comeback.

Watch: Yalda Hakim and Richard Engel reflect on 100 days of Trump

Their analysis meant readers of this blog and viewers of Sky News had a sense of what was coming hours before the result was called by the networks in the early hours of 6 November.

Trump returned to the White House and immediately set about implementing his agenda, emboldened in a way many second-term presidents are by the knowledge they're four more years and out - though as we've reported, Trump and his loyalists have hinted and provoked with suggestions he could, somehow, run again in 2028.

Our US team, fronted by correspondents Mark Stone, Martha Kelner and James Matthews, have been your eyes and ears on the new administration, reporting on the blitz of executive orders, the influence of Elon Musk as he bulldozed federal institutions, the arrival (and jaw-dropping dismissal) of foreign leaders in the Oval Office and the ignition of a global tariffs war.

They, and we, will continue to bring you coverage through every step of the Trump presidency.

Thank you for following along.

Sky News live team

On the 100th day of Donald Trump's second term in the White House, our US correspondents James Matthews, Mark Stone and Martha Kelner look back at the most significant moments from the past few months.

From deportations and tariffs to that moment with Volodymyr ZelenAG°Ù¼ÒÀÖÔÚÏß¹ÙÍøy in the Oval Office, is Trump right when he claims he runs the US and the world? 

Plus, Mark and Martha have a challenge for James 'The Voice' Matthews...

If you've got a question you'd like the Trump100 team to answer, you can email it to trump100@AG°Ù¼ÒÀÖÔÚÏß¹ÙÍø.uk.

Don't forget, you can also watch all episodes on our .

By Dominic Waghorn, international affairs editor

One hundred days ago, America presided over a world order it had itself crafted.

That order was designed to ensure US dominance in a global system that had offered growing prosperity, stability and security for decades.

The US economy had rebounded from the ravages of COVID-19 more effectively than any other, even if enough Americans did not yet feel the benefits to save the outgoing administration from electoral defeat.

But the US was leading the world's economy in a tentative recovery.

Now all that is in doubt.

To his supporters, Donald Trump has used those 100 days wisely. To their minds, that much-vaunted world order ripped off America and he is rightly seeking corrective retribution.

He has declared a trade war on much of the world. In his eccentric reading of economics, allies that America has traded with most closely have been screwing the US and must make amends.

The result of his tariff policy was a precipitous collapse in faith in America's once all-powerful currency and the competence of its stewards.

Only an embarrassing partial volte-face averted a truly catastrophic rout on the bond markets and all that might have followed for the dollar.

President's unorthodox approach

Taking aim at phantom threats, say his critics, this president has instead holed both feet with a barrage of bullets.

Trump's diplomacy and use of American power have been equally unorthodox.

He seems to believe in a natural order of things. The strong dominate. The weak accept their fate. He has talked of taking control of Greenland and Panama as if it were US destiny and absorbing Canada as America's 51st state.

He has embraced Russian strongman Vladimir Putin's narrative for invading Ukraine and blamed the war instead on President Volodymyr ZelenAG°Ù¼ÒÀÖÔÚÏß¹ÙÍøy.

Trump has horrified allies

He has ordered his diplomats to vote with Moscow at the UN and horrified allies by publicly bullying the Ukrainian leader in the Oval Office, aided and abetted by his vice president JD Vance.

The peace plan he has offered is so one-sided it could have been written in the Kremlin. Ukrainians say it proposes extorting much of their mineral wealth and demands the surrender of much of the land taken in the most egregious act of aggression on European soil since the Second World War.

More broadly, allies have been put on notice that the US will be retreating from its decades-long role as guarantor of international security and prosperity in Europe at least.

As America puts itself first, so other nations are being urged to do the same.

Critics say this will lead to a world of fortress nations erecting defences in place of decades of cooperation promoting peace and prosperity. That will only increase the risk of discord and conflict.

Ironically, America has been enriched and empowered by decades of a world order they call the Pax Americana, not impoverished by it, but Trump's radical prescription is already threatening Americans with rising prices and empty shelves.

Tool of soft power discarded

America under Trump is also discarding one of its greatest tools of soft power abroad. It has dismantled US aid, leaving the health of tens of millions in jeopardy and a vacuum that China is only too eager to fill.

Also damaging America's prestige and standing in the world is its president's very un-American assault on democracy and freedom at home: his attacks on judges, use of executive power to target rivals and critics wherever he finds them, in academia, in the media and in corporations and law firms.

And then there is his extrajudicial deportation of US citizens, or "homegrowns" as he calls them, to a central American gulag run by a government with an appalling human rights record.

US 'no longer reliable partner'

America's claim to offer moral leadership has been tarnished by this administration.

It is no longer seen as a reliable partner by allies and they are stating so more and more publicly.

Some hope Trump will soften his approach as his policies encounter controversy and threaten his popularity as he has already with tariffs.

However, he has shown a greater determination and radicalism than in his first term in office.

Allies will remain engaged, hoping to moderate and influence this president's foreign policy, but in 100 days, the world and America has changed under Donald Trump and in many ways irreversibly.

From the White House these past 100 days, I've chronicled the whirlwind that's reshaping America.

Getting beyond the West Wing and out of Washington has been harder. The volume of news has necessitated a near-constant presence in the US capital.

Every single day, there has been something. Of course, this has been entirely intentional for the president and his team of proud disrupters.

They pledged to govern differently, and on that promise, they have more than delivered.

To fix America, Donald Trump first had to convince people that it is broken. Many didn't need convincing. Look for decline here and you'll easily find it; communities left behind.

Look for bureaucracy and waste - you'll find that too. Common sense silenced by wokeism? Many can relate to that. Immigration out of control? Politicians have been struggling with that for decades.

In just 100 days, Trump has harnessed all of that into a package of change that feels like nothing short of a revolution.

Despite the tsunami of news, my colleagues and I have managed to escape from the White House. And it is there, beyond Washington, that the more subtle but no less profound changes to the fabric of this nation can be felt.

Whether it be innocuous tattoos that might now be associated with gang membership, free speech opinions penned on social media or the willingness just to chat about politics, one startling thing I have observed these past 100 days is a growing sense of fear.

A passion for politics

Anyone who has worked as a foreign correspondent in America will tell you that Americans love to give their opinion on politics. And they do it, always, with word-perfect articulation. There is no better place in the world for a "voxpop".

There is a passion for politics that I haven't seen anywhere else I've lived and worked. Until now. Over these past 100 days, I have increasingly found a reticence that reflects an America changed by this president and his style.

I'm in Detroit at the moment, in Michigan, the battleground state that helped to deliver Trump the presidency in November. I was here back then, too, and recall the enthusiasm with which people would discuss the upcoming election. There was enthusiasm for Trump and enthusiasm for Harris.

An indictment of the times

Now the response to my questions is, so often, "no thanks, I'd rather not". Sometimes people ask where the report will be seen. "Will it be on in America?" Think about it - this is America. What an indictment of the times, that people fear offering their opinion - whatever side of the aisle they sit.

Very often, it's businesses that are extremely cautious of being associated with one political view or another. Such is the animosity now between the two sides.

After a day of perseverance in Detroit this week, a few folk did talk to us. Their answers were revealing.

In a park, I met Marie Freeman, who said people are now "more angry". Her view is that America has lost something over these past 100 days.

"I definitely want us to move forward in a positive, more empathetic way. I think with Trump being such a hardcore president, we lose the empathy, we lose the grace for our fellow neighbours. We're all so angry because we're under angry leadership. And that's not good."

She articulated a vibe which I recognise in so many parts of this country right now. A lack of grace and empathy.

Yet, yards away, a couple walking their cats stopped to chat. I asked how they would rate these past 100 days. Two 10/10s for Trump's performance.

Thanks for following our live coverage of the latest developments on Donald Trump's administration.

Here's a recap of today's key moments:

• Mike Waltz has left his role as national security adviser
• While there have been no details on why he departed, it comes after he claimed "full responsibility" for inadvertently adding a journalist to a highly sensitive chat on encrypted messaging service Signal with other senior US officials
• Secretary of state Marco Rubio is set to take on more responsibilities with the interim national security adviser brief
• Shortly after news of Waltz leaving and being nominated by Donald Trump as US ambassador to the UN, pictures emerged purporting to show him using Signal during a cabinet meeting yesterday

In other developments...

• Trump says countries that buy oil from Iran will face sanctions
• He also addressed a crowd in the Rose Garden at the White House to mark national prayer day
• The president claimed tax cuts were on the way and tariffs will make the US rich

Mike Waltz may have gone instead of Pete Hegseth because the role of a national security adviser isn't one which is senate-confirmed, former director of global engagement at the White House, Brett Bruen, said. 

Speaking on The World with Yalda Hakim, Bruen responded to speculation about why Waltz has left his post as national security adviser while Hegseth, who was also involved in Signalgate, was praised by Trump today for doing a "fantastic" job. 

As we reported a little while ago, Waltz left his position as national security adviser today, with secretary of state Marco Rubio set to replace him on an interim basis. 

It comes after Waltz said he took "full responsibility" for Signalgate, which saw him inadvertently adding a journalist to a highly sensitive chat with other senior US officials on the encrypted messaging service Signal. 

The chat also included defence secretary Hegseth - who shared timings of US airstrikes, which could have put American military personnel at risk if leaked.

Separately, Hegseth shared messages on Signal with his wife and brother about military strikes. 

Asked by Hakim why Waltz left as opposed to Hegseth, Bruen noted how the national security adviser role was "not a senate-confirmed position so it makes it easier for President Trump to swap in and out�"

He added: "Mike Flynn lasted 24 days and then there was a whole series of other national security advisers who were coming through that revolving door at the Trump White House.

“This is a position that can immediately be filled, Trump has done so with Marco Rubio."

In regards to Rubio being appointed as interim national security adviser, Bruen said that, like Waltz, he is "someone who comes from that more establishment, internationalist wing of the Republican party, as small as that is these days, so I don’t know that we can yet make the assessment that the MAGA movement is on the ascendancy in the national security world�"

Back to Iran now, after Donald Trump's unexpected announcement of tough sanctions on Iranian oil today.

The US was never confirmed to be participating in a fourth round of talks with Iran, Tammy Bruce, spokesperson for the US Department of State, said earlier.

The talks, which had been due to take place in Rome on Saturday, were postponed earlier today, a senior Iranian official told Reuters.

The official said a new date will be set "depending on the US approach".

"US sanctions on Iran during the nuclear talks are not helping the sides to resolve the nuclear dispute through diplomacy," the official said.

Bruce said the situation was "fluid" and added: "We expect another round of talks will take place in the near future."

With Donald Trump surprising us again this evening, it's a good time to revisit analysis from Yalda Hakim, our lead world news presenter, who has been looking at the US president's first 100 days.

So, after 100 days of Donald Trump, the big question for me remains - does the US president have a coherent foreign policy, or is he just winging it?

Let's take his attitude to the war in Ukraine - here "inconsistent" is perhaps the best description.

Back in February, he and vice president JD Vance humiliated Ukrainian President Volodymyr ZelenAG°Ù¼ÒÀÖÔÚÏß¹ÙÍøy by shouting at him in the Oval Office.

A few days later, I spoke to ZelenAG°Ù¼ÒÀÖÔÚÏß¹ÙÍøy in person when he confided to me that maybe he would have to step down if NATO could guarantee Ukraine membership - a man who perhaps sensed he could never win against a hostile Trump.

Yet, fast-forward to last weekend in Rome, and an iconic picture of the two men in close conversation at the Pope's funeral.

This time round, it is Russian President Vladimir Putin on the receiving end of the presidential anger, blaming him for the fact that "too many people are dying!"

To Trump's supporters, this is the smart negotiator, constantly repositioning himself as new information comes in, prior to pulling off a spectacular deal.

To his many detractors, it indicates a dangerous incoherence that is replicated in other key areas, including tariffs as well as his relationship with his allies in Europe and his foes in Beijing.

Read Yalda's full piece here. And to enjoy The World podcast, which she co-presents, on your podcast app of choice.

As you're here, you've probably not missed the news that Donald Trump's national security adviser Mike Waltz is leaving his role, in the first big shakeup of the US president's inner circle since he took office on 20 January.

Trump announced that Waltz would be taking up a role as the next United States ambassador to the United Nations.

In his stead, Marco Rubio - who is already US secretary of state - will advise Trump on national security.

But who is Waltz? And what is his background?

We take a look in this explainer...

Tammy Bruce, spokesperson for the US Department of State, said she had no prior knowledge of her boss Marco Rubio replacing Mike Waltz as national security adviser on an interim basis.

Bruce is giving a briefing to journalists at the moment.

She had only recently started the briefing when a statement by Donald Trump on his Truth Social platform announcing the move was read out to her earlier. 

She replied, saying: "It is clear that I just heard this from you..."

'This is a man who has worn several hats'

Bruce then went on to praise her boss as a man who "knows everyone" and has plenty of experience and connections. 

"This is a man who, as I think you all know, has worn several hats from day one in managing the nature of what has happened here at the state department, at USAID [United States Agency for International Development]."

She added Rubio's "close working relationship day to day with the president happens for a reason", and said they had "gotten to know each other very well".

Talking about how Rubio would manage two roles at the same time, Bruce said: "So when we think about how is secretary Rubio going to do this...

"Well, it's like how does President Trump run the US? You have people around you, it's not just you."

She added: "It's about managing people... assigning people to the right roles as the president has just done."