Angela Merkel has led Germany since 2005 and she is tipped to win a fourth term as chancellor.
Here's the insider account of how a young girl from East Germany became one of the most powerful people in the world.
There is a long history of governments and technology companies falling out over extremist content. It has largely gone this way.
Russian President Vladimir Putin has said pursuing further sanctions against North Korea is "useless", saying "they'd rather eat grass than give up their nuclear programme".
French President Emmanuel Macron on Friday triggered a furious reaction from Poland after he attacked Warsaw for rejecting tough proposals to overhaul a controversial EU rule on cheap labour.
Hungary is recalling its ambassador to the Netherlands and suspending high-level diplomatic ties in response to critical remarks by the Dutch ambassador about Hungary, the Hungarian foreign minister said Friday.