Immaculee Ilibagiza

I was at book club last night, and we watched an interview with Immaculee Ilibagiza, a survivor of the Rwandan genocide. She wrote a book called "Left to Tell", which I'm studiously avoiding as I know that it is harrowing reading. I had two thoughts though. We're facing a similar situation in Sudan at the moment - what is the most appropriate way to intervene? Just send in troops? Who sends in troops? With whose approval?

And secondly?

How can people you've grown up with, that you've known all your life, think that one day you're a friend, and the next day you're a cockroach? And how do you forgive them?