Break the news to them easy that you are no longer going to be together and that it doesn't affect your love for them. Make sure they know its not them. Try to hide your animosity as much as possible.
Wait to tell your children, they will want to know one day and you owe it to them to tell them but now is not the time in my opinion.
Your kids are to young for you to tell them that and that will create hate in your children heart . I know you must be hurting but its not fair to hurt your children thats between you and your spouse.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.