Unlike many other world leaders, Russia's president Vladimir Putin has kept quiet about Britain's upcoming referendum on its membership of the EU.

Newsbeat visits Oslo to find out what life is like in a successful European country, which is not part of the European Union.

Today Programme
BBC Radio 4

The Sun's editorial today accuses the prime minister of making "witless assurances" about the reforms he could secure from the EU.

When it is put to him that this is the same prime minister the Sun urged its voters to back at the 2015 general election, Trevor Kavanagh says: "I think he has made a lot of very serious mistakes and has been weak in his negotiations with the European Union.

"He has failed to get those fundamental reforms and he turns out to have misled us by failing to get those reforms."

Mr Kavanagh insists that had the PM come back with "something substantive" on immigration, border control and welfare, then "a great deal of people would have changed their minds or held their breath and decided to stay".

"I might have even been tempted myself," he adds.

Today Programme
BBC Radio 4

Associate editor of the Sun Trevor Kavanagh says the paper has pursued a 40-year campaign to get the UK out of the EU.

He says leaving would give the UK control over its own decisions, and suggests the EU could renege on the concessions it offered to David Cameron during his renegotiation process on keeping Britain out of ever-closer union.

"The European Union has a long and ignoble track record of saying one thing and doing completely the opposite," he says.

"We have learned to our cost in the past that the European Union does what it wants... and usually it does things that are anti-democratic."

Mr Kavanagh says "the democratic deficit is the biggest black mark against the EU".

Norman Smith
Assistant political editor

The latest polls - with all the caveats we must include when it comes to polls - paint a picture of growing momentum behind the Leave campaign. And indeed, I'm finding an increasingly dark mood, a gallows humour, among some members of the Remain campaign.

So what can Remain do?

Well, it seems to me there are two possible strategies. One, keep doing what they've been doing, hammering home the message on the economic risks of Brexit. 

Two, deploy the sort of Labour rescue strategy, using Labour figures to try to win over Labour voters. There'll be more of that today with Jeremy Corbyn playing the core vote card, warning of the negative impact Brexit would have on the NHS - in terms of losing money and staff.

Image source, News Corp

A bit of good news for the Leave campaign this morning, as the Sun newspaper has declared itself formally on their side., external

"We must set ourselves free from dictatorial Brussels," it declares in a front page editorial.

The BBC's chief political correspondent Norman Smith says it won't come as a surprise to many, given the constant flaying the paper gives to all things Brussels, but nevertheless, it is significant.

He points out that the Sun appeals to predominantly blue collar, less affluent workers, precisely the group the Leave campaign has been trying to reach out to so they don't appear just as angry colonels in the shires.

But also, Norman notes, it shows the profound difference between this referendum and the Scottish independence vote. In the latter, David Cameron was buoyed by the overwhelming backing of the newspapers. But in this referendum, large chunks of Fleet Street are noisily and aggressively in favour of leaving the EU.

The Leave campaign is also drawing attention today to what it calls the "jollies" being taken by EU officials at taxpayers' expense.

Supporters of Brexit say EU bureaucrats are running up bills of millions of pounds on high living, including visits to luxury resorts, flights on private jets and Caribbean cruises. 

Vote Leave has released analysis of what it described as more than £27 million (35 million euro) of "discretionary spending" on EU officials in the course of 2014, despite what it said were attempts by Brussels to keep it hidden. 

We visit Germany's capital to hear from people worried about the idea of Britain leaving the EU.

Image source, PA

Yesterday we heard from Gordon Brown and today it's the current Labour leader who takes centre stage.

Jeremy Corbyn will issue an urgent call to the "whole Labour movement" to campaign to keep the UK in the EU, warning jobs and workers' rights could be threatened by a Leave vote.

And in a co-ordinated attempt to bring Labour voters on side, union leaders will also warn of public sector cuts.

But Vote Leave said immigration was putting great pressure on public services and could not be controlled from inside the EU.  

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Top of the shop first thing this morning is an attempt by the Leave side of the argument to reassure all those organisations and individuals who currently receive EU funding that they'd get the same money if the UK votes to leave.

EU funding projects for areas including farming, science, and culture would be continued until 2020, they're saying, but the payments could be made more efficiently, allowing for more cash for priorities such as the NHS.

BBC political correspondent Ben Wright said Vote Leave's open letter, signed by ex-London mayor Boris Johnson and ministers including Michael Gove and Priti Patel, sounded like "a pledge of a government in waiting".  

But Remain campaigner and former chancellor Alistair Darling described it as "fantasy economics" and said the harm done to the economy by Brexit would force public spending cuts.

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Hello and welcome to today's live coverage of the EU referendum campaign. There are just 10 days to go until the UK goes to the polls to vote Leave or Remain. For now, stick with us and as always, we'll bring you all the news and analysis as it happens.

Here's your Monday round-up of the big stories in the EU referendum debate:

• Gordon Brown has urged Labour voters to vote Remain, telling them they have the "most to gain" if the UK stays in the EU
• Migration Watch has forecast that net migration will exceed 250,000 a year for at least 20 years if the UK stays in the EU
• European Council president Donald Tusk has warned that a UK vote to leave the EU could threaten "Western political civilisation"
• The Leave.EU group has been criticised after posting a message on social media linking the fatal shooting in Orlando to its campaign to exit the EU
• BT bosses and union leaders have sent a joint letter to staff saying they want the UK to stay in the EU, while pro-Leave MP Peter Lilley accuses them of "abusing their position"
• Away from the referendum campaign, MPs from all parties have been among those taking part in vigils in memory of those killed in the Orlando shooting

Responding to the Sun newspaper’s declaration of support for Brexit, a source at the Britain Stronger In Europe campaign said:

Conservative MP and Leave supporter Peter Lilley has accused BT bosses Sir Michael Rake and Gavin Patterson of "abusing their position" after they sent a joint letter with union leaders to staff saying they want the UK to stay in a reformed EU.

"Few companies are less affected than BT as far as their day-to- day business is concerned by whether Britain is in or out of the European Union," the former trade and industry secretary said. "There are no tariffs or obstacles on phone calls in or out of the EU. So why are BT bosses trying to cajole their staff to vote to remain in the EU?"