integrity is the word i learnt during the first year in university, i didn't know exactly the meaning of it, but i know it is important. By robertredford, this movie is about integrity, morality; also thought provoking. BTW, find a really cute guy-the young bob morrow :)
No explanation to the kids probably is the best way to solve this. I can't imagine their feelings once they know, it's so split. Kind of like the immigrant family, when you want them to acclimate, but at the same time, you don't want the enemies to seep into your culture.