Live: France attacks: Paris rally

Summary

1.  Huge crowds in Paris for unity march after three days of terror left 17 people dead
2.  40 world leaders including UK PM Cameron and German Chancellor Merkel attending
3.  Rally held after attacks at Charlie Hebdo magazine and kosher supermarket
4.  Supermarket gunman Ahmedy Coulibaly apparently seen in video
5.  France on high alert as security stepped up at synagogues and Jewish institutions
6.  All times in GMT