David Cameron says he can "deliver" on European Union reforms, despite a failed attempt to block former Luxembourg prime minister Jean-Claude Juncker's path to the European Commission presidency.
The leaders of the powerful G7 industrial nations meet in Brussels - with a noticeable exception - Russia President Vladimir Putin.
US president Barack Obama says it would be "hard to imagine" that it would be in Britain's interests to leave the EU, and hints that the US would prefer Scotland not to vote for independence.
How do you solve a problem like Europe? Former prime minister Tony Blair has a go, suggesting Britain should lead on reform in Brussels, while current leader David Cameron gets into an EU spat.
From making pigs happy to making bankers sad - ten reasons why, whatever you think about the European Union, you should be voting in the elections on Thursday.
Parties are campaigning for the European elections - but how much do we really know about what goes on in Brussels and the European parliament?
Only a strong single European state would be able to fend off the threat from Russia and solve the euro crisis, a prominent supporter of a federal Europe tells Channel 4 News.
Scottish nationalists are not the only ones trying to redraw the map of Europe. Here are 10 other countries with serious independence movements.
The United States takes action over the Ukraine crisis by imposing sanctions on seven individuals with close ties to Russian President Vladimir Putin, including the head of energy company Rosneft.