Former French president Nicolas Sarkozy has been detained for questioning, as part of an investigation into corruption.
Europe Editor James Mates has tweeted:
Unprecedented for a former president to be held in this way. #Sarkozy thought to have been planning a return to frontline politics.
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It will be a cloudy and at times damp morning across much of the UK, apart from the far west where it will be dry and bright.
Barack Obama has returned to the political spotlight, campaigning for Democratic candidates ahead of upcoming elections.
The prime minister said there was a "clear and urgent imperative" to give new impetus to stalled negotiations.