Syrian rebels have brought 24 years of Bashar al Assad’s dictatorship to an end in a single week.
Led by the former al Qaeda affiliate group Hayat Tahrir al Sham, the uprising was also supported by US-backed Kurdish forces, Turkish-backed militias, and dozens of smaller fighter groups.
Here we look at who the various rebel groups are, who supports them – and what areas they control now the government has fallen.
Hayat Tahrir al Sham (HTS)
The ousting of Bashar al Assad’s government was spearheaded by the Islamist group Hayat Tahrir al Sham (HTS) – a former affiliate of al Qaeda known then as the Nusra Front.
Its founder Abu Muhammed al Jolani broke away from al Qaeda in 2016 in a bid to appear more moderate.
It went through several name changes, eventually settling on HTS, and becoming the strongest anti-Assad rebel group around the city of Idlib in the northwest.
HTS is estimated to have between 10,000 and 30,000 members. The UK, US, Russia, and Turkey all classify it as a terrorist group.
“They are an Islamic group that represents political Islam,” military analyst Professor Michael Clarke tells Sky News.
“Jolani claims they are simply Syrian nationalists that will be tolerant of all minorities. But they explicitly rule out democracy because that takes legitimacy away from God.
“So the best we can hope for from HTS would be some kind of ‘benevolent dictatorship’ with a tolerance of Syria’s patchwork of different peoples.
“But the chances of them being able to bring everyone together under a banner of Syrian patriotism is not great – so I suspect they won’t hold together for long.”
In an ideal world, Professor Clarke adds, HTS wants control of the whole of Syria – as opposed to rival groups who simply “want their agendas recognised”.
Syrian Democratic Forces (SDF)
The Syrian Democratic Forces (SDF) formed in 2015. They are largely made up of Kurdish fighters who want an independent Kurdish state across Syria, Iraq, and Turkey – although there are Christian and Arab militias who fight for them as well.
The SDF is mainly made up of members of the Kurdish People’s Protection Units (YPG), which came about in 2012, ultimately taking control of large parts of northeast Syria while Assad forces took on rebels in the west.
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Many of the YPG’s fighters are veterans of the Kurdistan Workers Party (PKK), which fought for decades inside Turkey in a bid to establish Kurdistan as an independent state.
As Islamic State advanced through Syria from 2014 – the YPG held it back – which earned it, and later the SDF, the backing of the United States.
“The SDF is the West’s main partner in fighting Islamic State,” Professor Clarke says.
“The US doesn’t want to get too involved – although like many Western nations, it is broadly supportive of a Kurdish homeland. So it helps with power and intelligence while the SDF does the dirty work on the ground.”
Professor Clarke describes it as “well organised” and strongest militarily in terms of “numbers and ability”, but adds that it “doesn’t want to take over the whole of Syria” – and is purely focused on the Kurdish struggle.
Syrian National Army (SNA)
After Turkey sent troops into Syria to push back both Islamic State and Kurdish groups in 2016 – a network of Turkish-backed militias formed and became the Syrian National Army (SNA) the following year. This grouping incorporated many elements of what was previously known as the Free Syrian Army (FSA).
The SNA then held an area along the Syrian-Turkish border – north of Aleppo – as a type of buffer zone to keep Kurdish forces out of its territory.
“Like the SDF, they’ve got an anti-Islamist agenda, but they’re aided by Turkey instead of the US,” Professor Clarke says.
While they were willing to join HTS forces to oust Assad – their agenda is ultimately “antagonistic” towards them, he adds.
The SNA currently holds territory along the Turkish border, which is split by larger SDF-held areas in the northeast and northwest.
Other groups
There are many more smaller militias active across the country.
Although Islamic State was almost completely eradicated in Syria by the US in 2019, it still has some presence in parts of the country. The US Army has kept around 900 troops inside Syria to suppress any activity, with IS attacks becoming more frequent since 2023.
Various other wider coalitions of rebel groups exist.
The Southern Operations Group formed as a new rebel coalition amid this month’s uprising and comprises around 50 groups including Christian, Druze, and Alawite fighters.
Wider umbrella groups, with both Syrian nationalist and Islamist ideologies, have also existed over the years.
“Most of these smaller militias change name and change allegiances fairly regularly,” Professor Clarke says.
“But they’re all competing to have their own agendas recognised by whoever is going to do the top job.”
Speaking to reporters in front of his residence at Rideau Cottage, in the country’s capital, Ottawa, he said “internal battles” mean that he “cannot be the best option” in the next election.
“I don’t easily back down faced with a fight, especially a very important one for our party and the country. But I do this job because the interests of Canadians and the well-being of democracy is something that I hold dear.
“A new prime minister and leader of the Liberal Party will carry its values and ideals into that next election. I am excited to see that process unfold in the months ahead.”
Mr Trudeau, who has been prime minister since 2015, faced calls to quit from a chorus of his MPs amid poor showings in opinion polls.
He came under further pressure after his finance minister, Chrystia Freeland, resigned in December over clashes on policy.
The disagreements included how to handle possible US tariffs imposed by Donald Trump‘s incoming administration.
Mr Trudeau’s resignation comes as the polls show his party is likely to suffer a heavy defeat to the official opposition Conservatives in an election that must be held by late October.
The Liberals must now name an interim leader to take over as prime minister ahead of a special leadership convention.
Mr Trudeau came to power 10 years ago following a decade of Conservative Party rule and was initially praised for returning the country to its liberal past.
But he has become deeply unpopular with voters in recent years over a range of issues, including the soaring cost of food and housing and surging immigration.
He is the eldest son of Pierre Trudeau, one of Canada’s most famous prime ministers, who led the country from 1968 to 1979 and from 1980 to 1984.
The political upheaval comes at a difficult moment for Canada internationally.
US President-elect Donald Trump has threatened to impose 25% tariffs on all Canadian goods if Ottawa does not stem what Mr Trump calls a flow of migrants and drugs into the US.
Many fewer of each cross into the US from Canada than from Mexico, which Mr Trump has also threatened.
Few one-time golden boys manage to retain their lustre long into political office.
Barack Obama just about held on to his, leaving the US presidency with his approval rating high despite his party’s 2016 loss to Donald Trump.
But Emmanuel Macron is faltering in France and Justin Trudeau steps down as head of Canada’sliberal party with his popularity in shreds. So much for Western liberal values.
In the high tides of inflation and immigration, those who were their supposed flag-bearers are no longer what electorates want.
For Mr Trudeau, it is a dramatic reckoning. His approval ratings have dropped from 65% at their highest in September 2016 to 22% now, according to the “Trudeau Tracker” from Canada’s non-profit Angus Reid Institute.
The sudden departure of his finance minister and key political ally Chrystia Freeland last month dealt his leadership a body blow, just as Canada readies itself for a potential trade war with the US which, she argued in a bracing resignation letter, his government was not taking seriously enough.
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“Parliament has been paralysed for months,” Trudeau says
The man Mr Trump recently trolled as “Governor of the ‘Great State of Canada’ or ’51st (US) state'”, Mr Trudeau was as close to Canadian political royalty as it gets.
The son of the country’s 15th prime minister, Pierre Trudeau, he was famously toasted by US president Richard Nixon as “the future prime minister of Canada” when he joined his father on a state visit as a toddler.
Aged five, he met the late Queen for the first time. “Thank you for making me feel so old”, she remarked drily at a re-meet in Malta almost 40 years later.
He has led Canada’s liberal party since 2013 and served as the country’s 23rd prime minister for almost a decade.
Mr Trudeau won a resounding electoral victory in 2015 and secured the premiership through two subsequent elections, though as head of a minority government.
He made significant inroads against poverty in Canada, worked hard on nation to nation reconciliation with Canada’s indigenous communities, secured an effective trade deal with the US and Mexico in 2016 and managed to keep the public mostly on-side through the COVID-19 pandemic.
But he was a polarising figure. Holidays in exotic climes like a trip to the Bahamas in 2016 to an island belonging to the Aga Khan made him seem elitist and out of touch.
There was embarrassment when blackface images surfaced from his early years as a teacher, for which he apologised profusely.
His supposed liberal credentials smacked of double standards when he invoked emergency powers to crush truckers’ protests in 2022.
But it was the economic aftermath of the pandemic, with Canada suffering an acute housing shortage, immigration leaping under his premiership and the cost of living hitting households across the board which really piled on the pressure.
In those, Canada is not unique. But the opposition conservatives and the public at large clearly want change, and Mr Trudeau has responded.
He has announced his intention to resign as party leader and prime minister after the Liberals selects their next leader.
Mr Trudeau’s legacy may shine brighter with a little hindsight. But now is not that moment.
The question is whether his conservative opposition will fare any better in an increasingly combative geopolitical environment if, as seems likely, a candidate of their choosing wins a federal election due at some point this year.
Donkey karts loaded with wrapped parcels of unknown goods weave around the large puddles of water left in the dried riverbed.
Young men quickly hop over laid bricks to bridge the puddles followed by women treading carefully with babies on their backs.
The Limpopo River’s seasonal dryness is a natural pathway for those moving intoSouth Africa from Zimbabwe illegally.
A sandy narrow beach undisturbed by border patrols with crossers chatting peacefully under trees on both banks as men furiously load and unload smuggled goods on the roadside.
Against the anti-immigration rage and xenophobia boiling over in South Africa’s urban centres, the tranquillity and ease of the border jumping is astonishingly calm.
“You can’t stop someone who is suffering. They have to find any means to come find food,” one man tells us anonymously as he crosses illegally.
At 55 years old, he remembers the 3,500-volt electric fence called the“snake of fire” installed here by the Apartheid regime.
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Hundreds of women and children escaping conflict in the late 1980s and early 1990s were electrocuted.
Today, people fleeing drought and economic strife are smuggled across or walking through border blindspots like this one.
“Now, it’s easy,” he says. “There is no border authority here.”
He crosses regularly and always illegally. While he laughs at the lack of border agents, he says he has been stopped by soldiers in the past.
“They send us back but then the next day you try to come back and it is fine.”
We find a few soldiers on our way back to the main road. They look confused by our presence but unphased. It is hard to believe they are unaware of the streams of people and goods moving across the dried riverbed just a few hundred metres away.
Border ‘fence’ trampled and full of holes
We drive along the border fence to get to the official border post into Zimbabwe, Beitbridge.
“Fence” is a generous term for the knee-height barbed wire laid across 25 miles of South Africa’s northern edges in 2020. Some sections are completely trampled, and others are gaping with holes.
The concrete fortress is a drastic change to the soft, sandy riverbed. Queues dismantle and reassemble as eager crowds rush from one building to another as instructions change.
Zimbabweans can live, work and study in South Africa on a Zimbabwean exemption permit, but many like Precious, a mother-of-three, cannot even afford a passport.
When we meet her at a women’s shelter in the border town of Musina, she says she only has $30 (£23.90) to find work in South Africa and that a passport costs $50 (£39.80).
“My husband is disabled and can’t work or do anything. I’m the only one doing everything – school, food, everything. I’m the one who has to take care of the kids and that situation makes me come here to find something,” she says tearfully before breaking down.
The shelter next door is home to trafficked children that were rescued. Other shelters are full of men looking for work.
Musina is a stagnant sanctuary for Zimbabweans searching for a better life who become paralysed here – a sign of the declining state of Zimbabwe and the growing hostility deeper in South Africa.
In Johannesburg, South Africa’s economic centre, illegal immigrants are facing raids and deportations organised by the Ministry of Home Affairs at the behest of popular discontent.
The heavy-handed escalation in the interior sits in stark contrast to the lax border control.
“I wonder how serious our government is about dealing with immigration,” says Nomzamo Zondo, human rights attorney and executive director of the Socio-Economic Rights Institute of South Africa (SERI), as we walk through Johannesburg’s derelict inner city.
“I think part of it is that the South Africa we want to build is one that wants to welcome its neighbours and doesn’t forget the people that welcomed us when we didn’t have a home – and that is why I think they are so poor at maintaining the borders.”
She adds: “But then the call has to be one that says once you are here, how do we make sure you are regularised here, that you know who you are, and contribute to the economy at this point in time.”
Climate of anti-migrant hate
In 1994 as South Africa’s first democratically elected president, Nelson Mandela ordered that all electric fences be taken down.
His dream for South Africa to become a pan-African haven for civilians of neighbouring countries that provided sanctuary for fighters in the anti-Apartheid movement was criticised by local constituents back then.
Now in a climate of increasing anti-migrant hate, that vision is rejected outright.
“I think that is the highest level of sell-out. When South Africans were in exile, they were in camps and they were restricted to go to other parts of those countries,” says Bungani Thusi, a member of anti-immigrant movement Operation Dudula, at a protest in Soweto.
He is wearing faux military fatigues and has the upright position of an officer heading into battle.
“Why do you allow foreigners to go all over South Africa and run businesses and make girlfriends?” he adds, with all the seriousness of protest.
“South Africans can’t even have their own girlfriends because the foreigners have taken over the girlfriend space.”