I believe abortion is murder. Period.
I also think that there are circumstances where that choice possibly has to be made - but not as often as people think. In the case of eclampsia, if it occurs early enough, it will come out to be a choice of mother or child. The only cure is delivery and before 26 weeks, that is a death sentence for the child. However, the mother AND child will surely die if the baby is not delivered. So it does come to the choice of "murdering" the baby or letting them both die.
I do know that there are surely other scenerios which leave the parent's with a horrible choice and there are many that I just don't know what I'd do. Do I crucify the parents? No I don't. It's a supremely difficult choice and one I cannot make for them. IF there's a chance that the child can live, then I think it's best to try and IF there's a way for the pregnancy to continue for a little while to give the baby the best chance, then I think it's best to try. But there are times when the choice is pretty clear and I think that's a different story than just "abortion".
Even a tubal pregnancy results in an abortion. That baby has no chance to survive but the choice needs to be made to let "nature take it's course" or to try to save the mother.