France's President Francois Hollande (Reuters)
French President Francois Hollande says he is closing the country's borders and declaring a state of emergency after several dozen people were killed in a series of unprecedented terrorist attacks.
Hollande, in a televised address to his nation, said the nation would stand firm and united against the attackers.
He said security forces are assaulting one of the sites hit by Friday's attacks, without elaborating.
"It's an horror," he said.