Butterfly Planet

Look down into the streets, the buildings, the parks.

There is your battleground. Down there is the enemy - an enemy who wears no uniform.

He walks behind you in the street, sits with you when you eat, and perhaps swims beside you in a public pool. He may ask you for a light, bow you into a hotel, sell you a flyer, or in another form, leave the smell of perfume on your pillow.

The enemy is young and old, male and female, and he is everywhere. Could such a situation arise - or has it arisen? In...