The White House says Donald Trump will cut short his Group of Seven (G7) meeting and return to Washington tonight, citing the Middle East situation
Trump will likely skip planned meetings with the Ukrainian and Mexican presidents on Tuesday
He is also not expected to sign the G7 statement on the Iran-Israel conflict, despite other leaders' plan to call for de-escalation and protection of civilians
This comes after Trump and Sir Keir Starmer have signed a tariff deal between the US and the UK at a meeting during the G7 summit
Earlier, the US president called it a mistake to expel Russian President Vladimir Putin from the group in 2014, then called G8
Watch: Trump mistakenly says trade deal reached with the EU after agreement with UK
Image source, ReutersUK PM Starmer says it is a "really important agreement" with the US that includes car tariffs and aerospace.
It's a very good day for both our countries and a "real sign of strength", he adds.
Image source, AFP via Getty ImagesTrump starts by introducing Starmer to the press as "the great Prime Minister of the UK".
The US president then holds up a document which the Prime Minister describes as "very important".
Trump says it's a trade agreement which is going to bring a lot of jobs and income to both countries. Trump says it's a deal with the EU, but it's likely he meant to say the UK.
We'll bring you more details on what that deal includes.
US President Donald Trump is now speaking with British Prime Minister Sir Keir Starmer. Earlier, we heard from Trump and Canadian PM Mark Carney.
You can click Watch Live at the top of this page to follow along.
We are waiting to hear from British Prime Minister Keir Starmer and US President Donald Trump who will speak to reporters shortly.
As a reminder, Starmer and Trump met in February at the White House with the US president accepting a rare second state visit to the UK from King Charles III. In early May, the two countries agreed to a trade deal.
You can watch their remarks by clicking Watch live at the top of this page
US President Donald Trump does not intend to sign the G7 statement on the Iran-Israel conflict, an official has told the BBC's US partner, CBS News.
A draft of the joint statement includes calls for de-escalation, language about monitoring Iran, and urges both sides to protect civilians.
The White House declined to confirm the reports, but said in a statement: "President Trump will continue to work towards ensuring Iran cannot obtain a nuclear weapon.”
Jessica Murphy
Reporting from the G7
Image source, ReutersCanada's Mark Carney is clearly aware that President Donald Trump can take one shouted question from a journalist and run with it - and he's been politely making sure that doesn't happen.
Nearly every leader here in Kananaskis has had their moment in the hot seat in Donald Trump's Oval Office.
Those "sprays" in journalistic lingo are usually choreographed affairs capped by a firm handshake between leaders for the cameras before they take discussions behind closed doors.
Under Trump, they can spiral into any direction.
Twice today Carney has stepped in, once to “exercise my role as G7 chair” and move things along and once with a quip to Trump that "I think you’ve answered a lot of questions already”.
But he's also aware that Trump can grow frustrated with these multilateral confabs, and has been giving the president effusive praise.
"Nostalgia isn't a strategy, " he told G7 leaders in his opening remarks, as Trump sat to his left.
"We have to change with the times and build a better world. And some of you, such as you, Mr President, have anticipated these massive changes and are taking bold measures to address them."
Image source, PA MediaBritish Prime Minister Sir Keir Starmer is now holding a meeting with French President Emmanuel Macron.
The pair appeared briefly for the media but didn't speak to reporters.
Image source, Getty ImagesFormer US President Jimmy Carter, former British Prime Minister Margaret Thatcher and former European Commission President Roy Jenkins attend the 1980 G7 Summit in Venice Italy.
The G7, or Group of Seven, is an informal organisation that includes the world's seven wealthiest democracies.
It was founded in 1975 when France hosted the first meeting.
The current members are the UK, the United States, Japan, France, Germany, Canada and Italy. The European Union is also represented.
Each year, the leaders meet for a summit, where they discuss pressing economic and geopolitical issues of the day and coordinate policy actions.
Topics can range from trade to the environment to nuclear safety.
Since the first summit in France, hosting duties have rotated between member countries. This is Canada's seventh time as host.
Kwasi Gyamfi Asiedu
Live reporter
Watch: "We have to change", says Mark Carney at G7 roundtable
G7 leaders are now meeting in the Canadian Rockies as violent conflicts continue in Europe and the Middle East.
Here is what has happened so far on the first day of the summit:
The G7 leaders are now in private meetings, but we will likely hear from some of them throughout the day.
Stay with us we will bring you the latest happenings and analysis from our correspondents in Kananaskis.
Anthony Zurcher
North America correspondent, reporting from the G7
The leaders of the G7 nations are now having substantive meetings behind closed doors.
In front of the press cameras on a sunny day in the Canadian mountains, they mostly engaged in chit-chat about the weather.
Donald Trump, after praising the current conditions, clearly has had weather on the mind. He noted that forecasters had predicted a "100 percent" chance of rain during the military parade in Washington DC on Saturday, but the precipitation never materialised.
Canadian Prime Minister Mark Carney apologised to Charlotte Merz, the wife of German chancellor Friedrich Merz, for talking about football earlier with her husband.
Carney also responded to one shouted press question, saying his one-on-one meeting with the American president was "fantastic".
Earlier, one-by-one the G7 leaders took to the stage with Mark Carney where the Canadian Prime Minster officially welcomed them to the summit.
Take a look:
Image source, ReutersUS President Donald Trump shakes hands with Carney
Image source, Getty ImagesCarney greets British Prime Minister Sir Keir Starmer
Image source, Getty ImagesCarney greets French President Emmanuel Macron
Image source, ReutersJapanese Prime Minister Shigeru Ishiba and his wife Yoshiko meet Carney
Image source, Getty ImagesCarney and German Chancellor Friedrich Merz
Image source, Getty ImagesCarney welcomes European Commission President Ursula von der Leyen
Jessica Murphy
Reporting from the G7
Canada's Prime Minister Mark Carney had plenty of praise for US President Donald Trump today.
The gathering "is nothing without US leadership - and so your personal leadership," Carney told Trump in a press conference before their meeting (as well adding some birthday wishes for Trump, who turned 79 at the weekend).
And after the roughly one-hour bilateral, Carney told journalists it was "fantastic".
Carney clearly wants consensus at this G7 meeting, and that includes keeping Trump in the family fold.
The Canadian PM has secured an early win with the president - Trump said an agreement on trade with Canada is "achievable" within weeks, despite what he described as "different concepts" on tariffs.
Canada is not alone in facing Trump's global trade war, but the US is its largest trading partner. The recent increase on steel and aluminium levies, especially, will bite.
The next step for Carney - after he gets through this G7, his first big test at navigating foreign affairs - will be to see if that deal is indeed achievable, and what's in it.
Watch: "We have to change", says Mark Carney at G7 roundtable
Carney says all the countries represented at the G7 table are reinforcing their militaries, but that there can be no security without economic prosperity.
Cooperation, he says, can lead to a "new era of prosperity".
He says the G7 leaders may not agree on every issue over the next two days, but they will have "open and frank" discussions.
Image source, CBCHost leader Mark Carney is speaking, seated at a round table with US President Trump and France's Emmanuel Macron on either side of him.
Carney says they are at "one of those turning points in history", and that the world "looks to this table" for leadership.
The world is more divided and dangerous, he says, calling this point in time a "hinge moment".
Image source, AFP via Getty ImagesMark Carney and his wife Diana are formally welcomed the leaders of the G7 countries to the summit.
Here's a look at who they are:
Image source, Getty ImagesCarney welcomes European Commission President Ursula von der Leyen
The welcome ceremony has started, and Canadian Prime Minster Mark Carney is now introducing G7 leaders.
Image source, X/Margo MartinTrump's communications adviser Margo Martin has shared a photo on X of the US president sitting with German Chancellor Friedrich Merz.
The two leaders previously met at the White House on 5 June.
We will see both leaders again in the next few minutes during the official G7 welcome ceremony.
Image source, Getty ImagesDuring the news conference with Carney, Trump repeatedly mentioned that Russia was thrown out of what used to be the G8 in 2014 - and blamed Barack Obama and former Canadian Prime Minister Justin Trudeau. Canada was led by Stephen Harper at the time, not Trudeau.
Trump called Russia's removal a "mistake".
In 2014, Obama and other world leaders decided to evict Russia from the group in response to Moscow's annexation of Crimea.
"International law prohibits the acquisition of part or all of another state’s territory through coercion or force," a statement from world leaders said at the time.
"To do so violates the principles upon which the international system is built. We condemn the illegal referendum held in Crimea in violation of Ukraine’s constitution."
The bilateral meeting with Trump and Carney has wrapped up, according to the Canadian side.
One of the issues they likely discussed was a trade deal. Before the meeting, Trump told media that he is a "tariff person".
Watch the video above to see what Trump had to say about their respective trade strategies.
Gary O'Donoghue
Chief North America correspondent, reporting from the G7
It’s clear that attempts are being made at the summit to produce some kind of joint statement on the conflict between Israel and Iran.
The British prime minister, Sir Keir Starmer, told reporters that he believed there was a consensus for de-escalation. But in something of a sign that there was still work to do on turning that into something concrete, he added: "Obviously, what we need to do today is to bring that together and to be clear about how it is to be brought about”.
In other words, a consensus on the ends perhaps, but maybe not quite on the means.
The German chancellor, Friedrich Merz, suggested that European leaders would propose a communiqué that Iran cannot possess nuclear weapons, and Israel had the right to defend itself.
No clear mention of de-escalation – a sign that the consensus may not be quite there.
The BBC’s US partner, CBS News, is reporting that President Trump does not intend to sign such a document. Expect other members of the G7 to try to change his mind over the course of today – not something that will be easy.