Once I have a hook I think has potential - enough to spin out more than a hundred thousand words, then I start turning my attention to characters. Who are these people? Why did this thing happen to them? But the hook always comes first.
You know, in the WikiLeaks cables, the Chinese discovered that Kevin Rudd was urging the Americans to keep the military option open against them. This is hardly a friendly gesture.
A girl in a bikini is like having a loaded pistol on your coffee table - There's nothing wrong with them, but it's hard to stop thinking about it.