There are fears of gas shortages in Ukraine after Russia announced it would raise its prices. But will that affect the rest of Europe?
With UKIP still clinging, tenaciously, to a little more than 10% in most polls, today may be seen as a twin body-blow for David Cameron.
Francois Hollande shot down David Cameron's hopes of talking about EU treaty change negotiations today.
The Conservatives' new immigration minister James Brokenshire had earlier said that Mr Cable was "incorrect" over the seriousness of the figures and also stated that wealthy Britons are "benefiting from immigration"
The Liberal Democrat Business Secretary Vince Cable has told ITV News that the issues over immigration are of "genuine concern to lots of people" and that he won't get into a "party political barney" with opponents or Coalition partners.
The Conservatives' new immigration minister James Brokenshire had earlier said that Mr Cable was "incorrect" over the seriousness of the figures and also stated that wealthy Britons are "benefiting from immigration".
David Cameron has said the European Union will consider far reaching steps against Russia if it continues to take steps to "destabilise" the situation in Ukraine.
He said asset freezes and travel bans on Russian officials could happen "relatively quickly" unless progress in talks are made, and revealed that he EU had agreed to suspend negotiations on easing visa rules for Russians in response to President Vladimir Putin's intervention in Ukraine.
Mr Cameron was speaking after a meeting of European Union heads of state in Brussels.
Immigration Minister James Brokenshire's speech today on border control was "feeble and pathetic", according to the head of an influential business group.
The Director General of the Institute of Directors, Simon Walker, said Brokenshire's speech seemed to be "more about political positioning and less about what is good for the country".
The Conservative party's new immigration minister James Brokenshire is expected to accuse the middle classes of befitting from the arrival of foreign workers into the UK in a speech today.
"For too long, the benefits of immigration went to employers who wanted an easy supply of cheap labour, or to the wealthy metropolitan elite who wanted cheap tradesmen and services – but not to the ordinary, hard-working people of this country," Mr Brokenshire is set to say.
"We are changing that and building a system that benefits all."
Read the full speech here.
The EU has now frozen the assets of 18 people suspected of "misappropriating" Ukrainian state funds - including ousted president Viktor Yanukovich.
Chancellor George Osborne announced the asset freeze would take place on Twitter:
We are freezing assets across the EU on 18 Ukrainians suspected of misappropriating Ukrainian state funds
Last week, migration experts and rival politicians accused the Government of losing its grip on immigration policy as official figures revealed the net flow of migrants into the UK surged year-on-year by more than a third to 212,000 in the 12 months to September 2013.
In his inaugural speech as Immigration Minister, Conservative James Brokenshire is expected to say, "In the past year net migration from the EU has doubled and this figure is, frankly, just too high.
"Some have tried to claim that this rapid increase is somehow 'good' for the country. Well, just like the Home Secretary, I disagree."
This will be in contrast to Vince Cable's Mansion House speech this evening where he is due to say the UK economy will be held back if the country is seen as "closed for business".
David Cameron and his European Union counterparts will hold talks in Brussels today aimed at sending a message to Moscow that Russia's intervention in Ukraine will have "significant consequences".
The hastily-arranged summit comes as Russian President Vladimir Putin refused to back down in the face of Western pressure to return troops to their bases and recognise the new government in Kiev.
In talks between Barack Obama and the Prime Minister last night the two leaders agreed the US and should be "united in condemnation" of Russia's actions.
Business Secretary Vince Cable is expected to say he is "intensely relaxed" about people coming to study and work in the UK "provided that they pay their taxes and pay their way".
Former Labour minister Lord Mandelson once famously said he was "intensely relaxed about people getting filthy rich as long as they paid their taxes".
During a speech at Mansion House tonight, Mr Cable will say, "I start from a fairly simple, basic economic proposition embedded in the EU Single Market: free trade - that is, the free movement of goods, services and labour - is good.
"This is particularly true about the free movement of people bringing skills in demand."
Business Secretary Vince Cable is set to anger his Conservative coalition colleagues today as he hails free movement in the European Union and attacks immigration "scare stories".
Speaking on the same day Tory Immigration Minister James Brokenshire delivers his inaugural speech in his new role, the Liberal Democrat will tell an audience at the Mansion House the UK economy will be held back if the country is seen as "closed for business".
While the Business Secretary is largely repeating views previously expressed, the timing of the speech looks set to frustrate his Conservative partners.
Both speeches are delivered amid growing pressure on Downing Street to publish an official report suggesting the impact of immigration is less than feared.