Mexican waves, Californian cool

THERE have been gunfights outside the American school and a big private university. The mayors of two suburbs have been murdered. And a grenade has been thrown at Saturday evening strollers in a square, injuring 12. All this has happened since August not in Kabul or Baghdad but in Monterrey in northern Mexico (see article). The latest battleground in a multilateral war between drug-trafficking gangs and the authorities, Monterrey is not a dusty outpost. It is one of the biggest industrial cities of North America, a couple of hours' drive from Texas and home to some of Mexico's leading companies.