French police stopped an apparent bomb attack outside a US bank in Paris early on Saturday when they arrested a man about to set off a homemade explosive device, officials and sources close to the case said.The incident occurred around 3.30am in front of a Bank of America building in the chic 8th arrondissement, a couple of streets from the Champs-Elysees.Police grabbed the man just after he placed a device, made of five litres of liquid (1.3 gallons), believed to be fuel, and an ignition...